Yeah my knees are shot too. Forty five years of crawling and squatting on hardwood floors to paint baseboards has taken its toll. Sucks getting old Barnaby.
Obviously we're not as effective in a lot of things, being older than when we were younger. Old age is not so bad, at least there is something to look forward to, like growing young again. Not sure it can be called growing but. Reverting prehaps, reprogramming even.