I was 50 + when I fist joined AB, working, and with a with a busy life. I sdmit ì was a moderator. Now I'm 70 + falling to bits and here again. But had 5 year break in the middle. I would say AB is mainly 50 +. For me now it's something to do to take my mind off real life. My mind is still active but the body is not.
I am not as nice a person as I was at 50. I am more outspoken and now don't suffer fool's well. I would make a lousy moderator! and I can't imagine why young people would come on here even to ask questions.