I'm 47, and I really don't care if I grow up or not. I'm the one having fun on the bike.
Anyway - I ride year round (2X commuting a week for a 43 mile RT), except when there's ice on the MUP. Then, I'll use the rower or elliptical, or hit the trainer...but it's not as much fun as being outdoors.....
__________________
2020 Giant Defy 2
Fuji Cross Pro
Scattante 650-R trainer bike
'06 Kona Jake the Snake