I don't really want to delve into the theory aspects / "good vs bad marxist", but the fact is that its a brutal world and coping mechanisms dont give a fuck about moralism or ideology. If this is a coping mechanism for you there's no shame in that, but perhaps you'll find that eventually this coping mechanism doesn't serve you as well as others could

Source: used to drink a fuckton (e.g. a 26 oz bottle a day, or more) have now gotten all the way to only having ~5 drinks a week