I started playing folk guitar in the early sixties, played, gigged a little for a couple years and dropped it when 60's British invasion took over. (Those guys were using more than 3 chords!)
I resumed playing in the past year, bought an electric, and am making SLOW progress. I don't expect to join a band, but who knows. I'm just playing for the fun of it and, for me, that's enough. I guess what I'm saying is, if you enjoy any activity, do it! Forget about age. Of course, if you're looking for the big time, fitting in a certain professional groove, getting a record contract, maybe age is a factor. But playing music, since we emerged from caves and trees, is just something we do for the joy it brings us. Or is that too lame?
Bob