Hmmm, where to begin?
I hate people who lie. If someone has lied to me they are my enemy forever. So I have a lot of enemies.
I hate it when people swear constantly, like saying the f-word every other word and if they swear at me it's like being hit with a whip. I even hated swearing when I was a teenager, and it made me so popular, not.
I hate people who are cruel to animals, people who are racist and sexist, I hate drug addicts and alcoholics, I hate people who drive like lunatics thinking they will never get themselves or other people killed, I hate Bible-thumpers, people who act superior and like they're better than everyone else. I hate diet and exercise freaks, workaholics, people who think sleeping is a waste of time and brag about how little sleep they get by and how much do-gooder nonsense they accomplish while awake. I hate people who constantly do immoral and/or illegal things and get away with it. I hate overly-optimistic "Pollyanna" type people, people who won't leave me alone when I need to be alone, people who avoid me when I DO need them, and people who think war and violence will solve everything.