Ditto on the volleyball. I use to play in volleyball in various leagues until I noticed many of the people I played with having back pain. I stopped playing volleyball. I have been skiing every year for the last 25 years. Assuming no collisions with other skiers, I should be able to ski into by 80s.
Show me other sports where people continue to participate for 20, 30, 40, 50, and 60+ years? I can't think of too many. Skiing happens to be one of them.