It does you know, and even more so. For myself, I just wouldn't be comfortable playing publicly unless I was back to somewhere near my full potential. And without the motivational pressure of having to prepare for gigs, that motivation has to come from within. And be maintained for years. On the plus side, we're free to develop ourselves methodically with perhaps a little more wisdom and the benefit of hindsight, and free of the worries of going into a performance unprepared - a luxury we often didn't get when we were younger.