Have customers in their 80’s that own (and still ride) several bikes.
Have customers in their 70’s that regularly still ride mountain bikes properly offroad.
Ride with guys in their 60’s that I’d struggle to keep up with.
Rode up Snowdon with a bunch of guys in their 50’s the other week, they were all a lot quicker than me going up!
Know guys that started road racing when they were older than you are now, and got a Cat 2 license seemingly overnight!
I’m 33. I’m not as fit as I was 6 months ago, but I’m ok on a bike. 47 is at least 3 decades too early to even contemplate the question!