Has anyone mentioned it depends on what you mean by playing. Bedroom Player, 1 gig a month player, reheasal only player, gigging 3-4 times a week. Pub gigs , corporate/ function gigs.
That's going to vary from one guy to another. There are some guys in their 60s- 70s that are in no condition to do any serious gigging and there are some that can play multiple gigs per week with energy to spare.
Blue