My ex h was a Twat when he drank, nasty and cruel to me, then he'd cry. Not an alcoholic though.
Ex bf, was an alcoholic, awful drunk. Drank every single night, perhaps only one beer but always without fail. I left him due to it, couldn't bear it. When I say it was sometimes only one, most of the time it was more and he ruined every single weekend either by being a dick or by staying in bed all day then starting over again. I genuinely thought I could change him, not a chance.
Current bf, loves a beer at the weekend, works hard all week, goes to the gym, has hobbies, I have no problem with him having a few beers though when we first got together I was worried when I first saw him tipsy. Turns out he's really lovely no matter what and knows his limit.
It's not normal ime if you hate them when they drink, must mean they're being horrible in some way. My ex bf was a totally ea bastard and thankfully he had a lot of counseling when we split. Back on the beer now though.....sigh.