Life is even shorter if you do that. I really don't care what I look like but when I start feeling like crap and my energy isn't there it's time to do something. Me and the Mrs. have too much fun in life to have it come to screeching hault when we get old. I want to explore and be active well into my old age instead of saying "I'm too old for that".
I am actually planning on getting more active and walking like we used to. It has been kind of hard to do that for the last two years with my partner being in constant pain! Thankfully that will soon be over. She is doing great with the new knee.