Not all of them, but I do think a vast majority of them probably do. Even if it isn't smokes or whiskey I bet there is something they are spending their money on that isn't a necessity. Cell phone, Cable TV, Internet, etc
All too often I hear and see someone complaining they're broke w/a cigarette hanging out of their mouth, a smart phone in their hand, etc. STFU w/your complaining if you're going to be stupid w/your money.