I don't get:
Community, My Little Pony: Friendship is Magic, Adventure Time, How I Met Your Mother, Parks and Recreation, 30 Rock, and such. I've seen them all, and I just don't get their appeal. The humor is microscopic to non existent, the characters are mostly unrealistic/unrelateable/unlikable, and plots that don't really seem to go anywhere.
Screamy metal. If you're going to have singing, at least sound like you're trying to form words. Don't just scream! What is this popular?
Drinking/Smoking/Drugs. A lot of people in my family have been addicted to one or more of these. I've tried drinking, I've been around smokers, and dealt with druggies. And I don't really see the appeal. When I turned 21, I tried drinking, and I was only able to finish a third of the damn thing. My head felt like it was in a vice, and my throat and mouth were burning most of the time. Why would you keep drinking to the point where you're throwing up or even blackout drunk, and afterwords you're going to have a hangover?
Everyone knows smoking screws you up in so many ways, it smells, you smell afterwords, it leaves a mess, is expensive, why bother?
And drugs can do the same as drinking and smoking, and can be more expensive than both put together, so why do it? I don't understand!!
People who keep using hashtags in their Facebook statuses.
Spending excessive amounts of money on clothes that look like you got them from the Salvation Army.
My roommates. They're just... stupid let's say. And hipsters. Same as their friends.