The only people I've ever met that leave them on beyond three steps from the door are people that wanted to prove in class the next day that they're badass for going out on a weekday.
Wait, paper wristbands from clubs isn't a universal thing? They're ubiquitous throughout Georgia and New Orleans. I don't bother taking them off when I leave, and usually keep them on until I go to sleep that night (though sometimes I'll forget until the next morning).
Also, this...almost everywhere I went in NC had bracelets.