But that isn't the case at the Zodiac Lounge in north St. Louis.
There, being young is looked down upon; in fact, there's a sign on the door asking that customers be at least 35.
The manager, Nathaniel Chunn qualifies - and then some.
He's 70 - and says he put up the sign because he wanted to maintain what he calls "the integrity" of the place.
Most of the patrons are about 70 - and many of them like to sit around and chat about the past.
Another thing worth chatting about at the Zodiac and other bars which have higher drinking ages - there's less trouble.
As one patron put it: "we don't need a metal detector."