16 years of MTB's and in 2006 I decided that my favoured form of it was too much for me. I was into enduros- Long distance treks and I know my last one had a bit of adverse weather with it- but I decided at 59 that it was time to settle into something more sensible.
http://www.bikeforums.net/showthread...ns-Way-failure
Carried on mountain biking and still do occasionally but instead of bouncing when I fall- I now go "Thud".