There are circumstances where the bands would make more money playing over-21 places, but they choose not to. The bands I work with cater to the youth. They want to nurture that audience and maintain a good relationship. It s common sense. But in my experience, all ages are a lot more fun.
Younger crowds are more enthusiastic.
They re not all jaded. They still like music and freaking out. They re more loyal fans. Similarly, most bands on San Jose ska guru Mike Park s label, Asian Man Records, generally prefer all-age shows. Eric Fanali does an awesome job trying to put on as many shows as possible.