I have 9 grandchildren, and am just north of 50. I’m not in the least bit interested in one of those “grampa” (comfort) bikes ;-) My mountain bike is almost 21 years old - heavy as hell, and has no shocks.
Time to upgrade! I can’t imagine riding the bike I rode 10 years ago, let alone my first ATB I bought 20 years ago.
I just turned 55 last Friday. Between my Harley and Kawasaki Versys, I’ve logged 30,000 miles since August 2008. I put 800 miles on a DR650SE climbing mountains in Idaho in late Summer 2008. January 2009 put a Yamaha Roadliner (1900cc) in the garage. Only 1800 miles on it because I’m never home to ride it. Enjoy life. Just do it with care.