I know, I know, and I did feel for him at first, but now he's being reckless and stupid. When I watch the show I think of it in terms of "if this was my survival team he'd be kicked the **** out." That characters "don't get to be upset" has been a strong theme, after all.
But yeah, I think you're right. The alcoholic's not going to last long.
I think Carol will make another appearance eventually, whether it's as a walker or otherwise. I was surprised at Rick's decision, tbh, but I think it was a good one for Carol's sake.