Please tell me how the places you're talking about are being run? You also said you like to mix it up with what you play and not the same thing all night.
Again I contend that it's how a place is being run. The place can be in a nice area, but if not run properly it can turn into a zoo. Now what do you go to see in a zoo? Animals right? So if the place is being run like a zoo, what else do you expect to come in the place but people who act like animals.
You can come to one of my gigs and check it out for yourself.