[kgermino]

I think it just makes things easier. Sure people over 25 are still capable of causing problems, but I’d bet they are much less likely to be trouble and much more likely to politely leave when told they are. It also makes things much easier at the door. If a group of college kids decide to show up one night it’s much easier to say “can’t let you in, too young [and I don’t make the rules]” than “won’t let you in, I don’t want to have to kick you out.” It lets the bouncer deflect the decision and appeal to an authority that’s not in the conversation.