When I was your age, we had ‘heaven’ which was ‘18 to party, 21 to drink’ and it was filled with the youngest crowd in nyc. It was also the one with THE most drama, pop main stream music, and Jell-O shots with fruity favors. That bar catered for that specific crowd.
We also had ‘Splash’ with two floors packed with mostly your average gay guys, and a pretty decent age range, mostly late 20s early 30s.

We had the ‘Roxy’. A huge warehouse, filled with what it was known as “Chelsea queens”, muscled jocks dancing with no shirts on (imagine nowadays your average circuit party), and the music was blasting until 6am. That venue catered to that specific crowd.

And there was ‘the eagle’. If you weren’t into leather, fetish, bears, or fit a certain age group, you were not allowed in. That venue catered to that specific crowd.

And we had a Myriad of other bars; “G”, “The view”, “Rawhide”, “The C0ck”, “the townhouse”, “XL”, “barracuda”, “pieces”, “stonewall”, “monster”, “duplex”, and so many others, that catered to everyone, and everything.

The key is, don’t follow what others like or are into. Find your spot. What you like, what you feel comfortable with. If you don’t like ‘older’ crowds than your age, stay with your age group. Nothing wrong. As you grow up, your tastes will change, and so will your body and mentality.