I turned 56 in October. I had finally relegated myself to playing twice a month in rotation in my church on Sunday mornings. In the last month I have been invited to join a new group in the area, my old group has gotten back together (after the death of the guitarist) for a reunion, and I practice with them tomorrow. I was also asked to record and produce some tracks for a progressive folk duo. They also want me to play the ukulele bass, hand drums & percussion. These things come and go in waves, and at my age that's a good thing. As long as you enjoy playing, and are physically able, then I'd say have at it.