Well, I am not yet at retirement age and I agree that standing during a performance gives the musician more of a 'presence' to the audience but I have to admit I have used a stool (bench) from the get go. In my case it is much more relaxing for me to play while seated. And I also use 2 foot pedals. When playing with my band I am tucked behind the lead band members so even if I stood I would still be basically out of the spotlight anyway, "which is fine with me btw" PS: Also when I play with my band I DON'T use any auto-accompaniment features of my keyboard, it is strictly keys only; mostly guitar, electric piano, acoustic piano, and organ sounds. But 99% of my HOME playing and practicing IS with auto-accompaniment. I do have times when I play to a smaller venue by myself and I will use all of the auto-accompaniment features of my PSR 2000 which gives the performance a live band feel, but there again I always sit when playing. I have tried standing up a few times when practicing at home and I might give it another shot. With a little effort I suppose I could get used to it and probably end up enjoying it so much that it could become my routine way of playing during a performance.

Best regards,
Mike