Very few of these suggestions fit the OP. No one in 2063 is going to think we’re crazy for not having housekeeping robots, no more than we think people fifty years ago were “crazy” for not having cellular phones.
Smoking, I think, is the best answer so far. Also, Internet privacy, but I keep vacillating between whether our descendants will think we’re crazy for not worrying enough about our privacy, or worrying too much about it.
I will also go with driving a car yourself (except for hobbyists).
Having a home not connected to the Internet (that is almost crazy now, at least in the developed world)
Having movies and music on physical media. ETA: you can talk to younger people who think this is crazy now.
Going out to see movies (which will be a shame but there it is).
I am seeing a theme in my answers. I guess I have movies on the brain 
You’re talking network speed, I’m talking bandwidth. Bandwidth is the total amount of network traffic available to all and, unless a massive amount of new cable is laid in the next few years, the US will not have enough bandwidth available to turn to an all streaming/downloading future.
People fighting violently to prevent the U.S. government from providing universal healthcare.
Agreed; the craziest thing about the present is our predictions about the future.
Also, the majority of this thread is just things that the poster finds crazy now (e.g. smoking), and a hypothetical future person saying, “Golly, people in 2013 sure were dumb to not agree with your 2013 self.”. C’mon, folks, let’s step things up.
I’d be amused if future people find our sense of environmentalism crazy because it ends up fairly easy to adapt to and even benefit from global climate change (n.b. I don’t think this is a likely scenario).
I like physical media, and hope it doesn’t entirely disappear, instead remaining a personal choice. It may be a faint hope, though.
I also hope that in 50 years, Americans being able to buy guns at the supermarket without a background check or license will be looked on as crazy.
I figure the doubts about and resistance to Climate Change will be looked on as crazy, but that will probably be because they’ll be living deeply in amongst incontrovertible evidence by that time.
Where the hell do you shop? Beirut? Somalia?
Within the last month or so they replaced all the light switches in my office (and all the rest) with motion-activated switches. The lights go off after 15 minutes of inactivity. I suppose if you are thinking deep thoughts, you might have to wave every 15 minutes.
What’s doubly interesting about this is that when the building was built in 1970, there were no wall switches at all. The janitors turned on all the office lights at 8 and expected to turn them off at 6, say. But too many people worked at night, so they left them on till midnight. But a few people worked beyond that and some came in on weekends, so you went to the breaker box and switched your lights on. But each circuit controlled five offices so you turned five on. When you left, you had no way of knowing whether someone had come and was working in one of the other four, so you left everything on. What a waste! But then, maybe 25 years ago they decided to add light switches. Problem: the electrical supply came in at 330 volts and powered two banks of three fluorescents each. But it is against code to have 330 to a wall switch. So they had to add relays, powered by the regular 110 to control those fluorescents. The reason for all this was the building was put up on a very limited budget and they saved money not only on the switches but by the fact that the 330 supply needed wires only 1/3 as heavy.
I can’t believe that people will not still want to dash off short notes, even to themselves. Post-its might because the standard medium.
In fifty years people won’t believe that we thought flying cars were a good idea.
Congratulations. You cannot do this right now!
Here’s another one I just thought of and I am virtually certain will come to pass.
“You mean you allowed animal raisers to feed antibiotics indiscriminately to their herds so that meat would be a few cents a pound cheaper, while breeding antibiotic resistant strains of all those pathogens. What could you have been thinking?” I will leave aside, although I shouldn’t, all those doctors who prescribed antibiotics willy-nilly just to appear to be doing something.
Betcha anything hipsters will be totally into like, collecting vintage paper books, man. They’ll be all, paper books are so cool.
Hipsters will do with tech what we’re doing with motorcycles now - wrap new tech in vintage trappings. They’ll have a mod that makes their iPhone78 look like an iPhone1 with an OS overlay that makes it look like it’s running iOS3.
Fifty years from now, the conditions for workers used to produce iPhones and Nikes for first world countries with outrage, in part due to Alex Haley Park’s best-seller “Soles,” where he traces his family’s history working for American shoe companies.
You can’t? Hmm, I have been misled. Then I apologise, and ignore that, please.
As other have written, every state (as far as I know) requires Background checks for sales at stores. The loop hole is you don’t need one for Private sales and Gun Shows are technically Private Sales. It is also legal in many states to buy a gun in a gun shop (with the back ground check) and then out in the parking lot sell it to someone else (without one). But I guess this is a huge tangent.
Factory farming of livestock will seem crazy in 50 yrs. Most meat will be manufactured in literal factories thanks to bioengineering. Meat made from actual livestock will be an expensive artisanal niche product for the wealthy (or certain religious groups), and it’ll be produced with traditional methods.
Depends on your definitions. If you count retailers like Walmart as supermarkets, you can buy rifles and shotguns in US supermarkets. There is a background check: apparently the clerk calls a number to see if your name is on a federal don’t sell list. Rules vary from place to place, so you may or may not need a license. You would have to present some state-issued identification and fill out a form.
The background check is not particularly stringent. Virginia Tech mass murderer Seung-Hui Cho passed one despite being declared mentally ill by a judge.
Walmart itself may or may not keep a record of your purchase for its own database. It’s hard to tell if they actually do as the articles making the claim look dodgy to me.
Reportedly, it’s feasible to get around the background check by buying from a private seller.
I agree with the sci-fi that says it’ll be even easier to get guns in the future (Ready Player One has the protagonist buy a gun, ammo, and body armor from a vending machine). With better records, biometric identification, and biometric firing locks, clearing someone for ownership will be a piece of cake and coding the gun to that person means it won’t/can’t fall into the wrong hands; and since only the buyer can fire it, if it is fired illegally you’ve got him dead to rights.
Hipster or not, you can have my copy of the Codex Seraphinianus when you pry it out of my cold dead hands.
That’s exactly why those things will seem crazy rather than obsolete. Things that are not already nearly on their way out will still be in living memory of people alive then.
The problem is only with mobile, really. It’s not that hard for a company to start investing in higher speed land lines (like Google is doing) and then pushing others to have to compete. It’s just an infrastructure problem. It’s like when we thought home Internet would never go above 56k because of the quality of phone line junctions boxes.
There is a problem with mobile bandwidth, as we sold way too much signal space back in the day for analog television. The reason right now that unlimited bandwidth is so rare for smart phones is that we just don’t have enough room in the currently allowed frequency bands. Unless the government gets tough and forces takebacks of unused space and limits the number of digital channels per network, we will never be able to have the mobile bandwidth of most other first world countries.
This is actually what I think will keep the PC relevant. We can’t be completely mobile without mobile internet.