What are some things that, as far as you can tell, everyone you know seems to enjoy, but you don’t give a crap about?
A personal example: Tailgate parties. Everyone I see at one seems to be having a good time, but I have zero interest in attending one. Sitting in a parking lot and eating and socializing? Feh.
Television programs. I don’t watch anything with any regularity and never have.
Well, there was a year or two back in 1993 - 1994 when I tried to catch The Simpsons every week, but apart from that I have never followed any TV program at all. Ever.
Sports.
Wine.
I try to like it, but except for a few types, it really does nothing for me.
Christmas.
Load of nonsense.
Coffee. I just never got in the habit and wouldn’t know what to do in a Starbuck’s.
Everything mentioned so far and just about everything else likely to be mentioned in this thread. I add specifically ‘shopping for clothes or shoes’.
Tuna fish. Yuck!
Coffee and beer. They taste vile.
Sports, booze of any sort, the Harry Potter or Twilight movies, chicken, turkey, ham.
Probably others, but that’s what I thought of for now.
I don’t enjoy sports as much as most do but I’m willing to watch a game or two in order to spend time with friends. I have never cared at all for the meta-game aspects of sports, though. When a sports fan starts into “If we win and Teams A and B lose their games and Team C wins…” I can’t make myself pay attention.
Others for me:
Bananas.
Discussing or debating politics.
Online multi-player video games.
Can I sit by you? I don’t care about sports either.
Also I just wanted to sit here. 
Football. I liked getting to eat Doritos and guacamole during Superbowl parties as a kid, but that’s the extent of my enjoyment of the sport. I used to play and perform (in marching band) at every football game at my high school, and I never paid attention to the field unless it was our turn to be on it. The vast majority of the game is just a bunch of dudes standing around! I get as much enjoyment from football as I do from watching masked people stand in line. Feh!
Shopping. I don’t even care for grocery shopping, much less clothes and shoes and gift shopping.
The casual-sex-pickup-at-a-college-bar-or-party scene. I liked casual sex as much as the next college student, but I never liked going to a liquor-serving establishment for it. Picking up people among clubs/study groups is better.
Almost exactly this. Although I did follow TV shows when I was young, since the mid-90s I have not tried to follow any TV show except for The Simpsons. Plus there were a few PBS shows that I watched whenever they came on, but they were so infrequent that it wouldn’t really count as “following”.
Plus, now I don’t watch TV at all, what with analog being killed, getting no digital stations over the air, and not wanting to pony up $50+ a month for something I’d barely watch anyway. Thankfully the digital TV I bought can double as a monitor for my second computer/X-box.
Video games
Children.
You don’t need an excuse.
The movie Elf.
Going to the movies. I can barely make it through a movie at home, pausing when I need to do something else, and always multi-tasking. Paying through the nose to sit in a theater with a bunch of strangers and a sticky floor, going deaf when anything on screen goes kaboom, and it’s too dark to read while half-watching? No thanks.
Also, wine. Just don’t care for it. Maybe I could develop a palate, but I have migraines, and the risks seem higher than the potential rewards.
To paraphrase C.S. Lewis: The most boring thing in the world (after sports, of course) is church litanies.