How old is too old to go to parks?

I have recently turned 16, and for a few months I have been going to parks, sitting on the swings, and just listening to some music. I understand I’m older now, so I was thinking about not going anymore. I do only go after 8 pm to avoid being in the way of younger kids who want to go on the swings. I guess more specific, is 16 too old to go to a park?