To repeat what a few people have said and add a few more;
Home ownership.
Summer camp.
Family vacations.
“Going to the bar”. I can’t imagine the purpose of going to a place just to drink. I’ll go to a restaurant and have drinks there, or i’ll swing by the bar at a concert venue to have a drink before the show starts, but why would I go to a place just to pay $10 for a glass of scotch when I could go to a store and buy the whole bottle for $30?
Flirting with people. I can’t imagine just walking up to someone I don’t know and trying to flirt with them. I once had someone try to pick me up while I was at a bar waiting for a concert to start - I found it awkward and uncomfortable and excused myself from the situation as soon as I could. (The fact that i’m a heterosexual male and it was a man trying to get me drunk was only incidental to the awkwardness.)
“Last-minute getaways”. You see these ads online all the time for last minute deals on flights to Cancun that are less than 12 hours away, and it seems to be a common enough plot in movies where a couple or a family will say “Screw it, we’re going to Tahiti in the morning.” How can someone DO that? Don’t you have jobs that would frown on you just deciding not to show up tomorrow morning? How do you have enough money just lying around that you can trip off across the world on a whim? How do you even PLAN a trip in that little time?
“Dinner parties”. Never been invited to or hosted one. I’ve gone to friends’ houses for dinner and vice versa, but this idea of putting on my Sunday best, a big roast in the middle of the table, wine and coffee being served, I can’t imagine anyone going through the trouble.
“Love at first sight.” I’m pretty sure you’re suffering from folie a deux.
Neighborhood associations, block parties, etc. I don’t even know my neighbor’s names and I prefer it that way.
School rivalries. I have no idea who my high school’s “rival” was.
School reunions. I have no desire to reunite with any of the twerps I went to school with.
Having a therapist.
Waiting in line for hours at the DMV. Every time i’ve been i’ve either made an appointment - in which case you show up at your designated time and you’re served - or there’s been less than a 15 minute wait to see the teller.
Ordering elaborate, specially made coffees at Starbucks. The handful of times i’ve been to Starbucks I ordered off the menu, and I never heard anyone make any special request more elaborate than “an extra shot” or “with caramel syrup”. If someone actually did ask for a half-caf soy double-shot peppermint creme hazelnut mochachino Americano skim with extra foam and a paper umbrella sticking out the straw hole the way they do on TV, I have to imagine the barista would do a double take and ask them to repeat it slowly while they wrote it down.
Buying or wearing jewelry. If I tried to i’d probably fail as hard as Infovore trying to buy drugs. (Buying drugs, for that matter.)
Haggling over the price of a car. The one time I bought a car, I paid the sticker price.
“Dinner and a movie”. I’ve gone on dates that involved dinner, and dates that involved movies, but I can’t recall going on one that involved both. I’ve never thought it was a very good idea - if you have dinner first and there’s a long wait then you’ll miss your movie, and if you have dinner afterward you’ll be too hungry and you’ll end up filling up on popcorn and spoiling your appetite.
Getting a tan. The only times in my life i’ve ever been tanned it was incidental from playing around all day in the sun. Lying still in the sun for hours on end sounds like the height of boredom to me.
Using condoms. All my sex partners have either been on the pill or no longer fertile, and I knew with certainty that there was no risk of catching a disease from any of them.
Massive family reunions. I don’t know the names of anyone in my extended family aside from my grandparents, my aunts, and my first cousins. (Truth be told, I have a sister whose name I don’t even know.) Once, when I was very little and my great-grandmother was still alive, I was brought to her (90th? 95th?) birthday party and put in a room off to the side with some of my second cousins. I had no idea who they were and can’t remember a thing about them.
Funerals and cemetaries. Never been to one. The only person i’ve ever known to die was my uncle and we skipped his funeral. (Years later, through an odd chain of circumstances, we ended up moving into his old house and the bedroom where he burned to death became my bedroom. I can safely report that I was not haunted by his vengeful ghost.)