48 and still feels like I'm 28. Of course being a Children-Free Self-Centered Materialistic individual helps.
I am not selfish, self centered. There is a difference.
Ride about 70 miles/wk., have 6 bikes (need more) design bikes, eat bikes, talk bikes, sleep with bikes.
Just converted a useless kids bike trailer (Burley) into one awesome dog trailer for my two Schanuzers Jaeger and Panzer. They love it. I tow them on either my SWOBO or Schwinn MTB. Neighbors get a kick.
Ignore Complacency, Transcend medocrity.

Erich