Who are we to judge him? We don't know what goes through his mind. If he wants to continue to compete, then everyone should be ok with that.
I can tell you now that A LOT of people around the world are happy to see him competing still. Ever seen an empty seat when he's playing at Wimbledon or the USO? You know he's going to give 100% in every match.
Wilson Six.One 95S > Alu Power @ 50lbs