I'm 41 and just started riding. This is a real question for me too: despite being able to watch my moto skills improve I do know that in the past five years I've been able to tell I don't have the stamina I had before then. Hopefully I have many years of riding ahead of me but for every sort of dangerous thing I do I now know I have to monitor myself for my real levels of ability. Also I know what counts as dangerous will change with time.
At some point I will reach a plateau on the bike that I will never be able to pass and at some other point I'll begin to decline. Right now I know I'm trying out new things and gently feeling out my limits all of the time. I make mistakes when I reach the limits, whether those are physical, mental, skill, or mechanical. Hopefully I'll continue to do what I'm doing now by knowing when I'm approaching the edges of the envelope and backing off.
If I'm careful, in the end I'll be slowly and happily reduced to only doing leisurely Sunday morning rides in the summer.
At some point I will reach a plateau on the bike that I will never be able to pass and at some other point I'll begin to decline. Right now I know I'm trying out new things and gently feeling out my limits all of the time. I make mistakes when I reach the limits, whether those are physical, mental, skill, or mechanical. Hopefully I'll continue to do what I'm doing now by knowing when I'm approaching the edges of the envelope and backing off.
If I'm careful, in the end I'll be slowly and happily reduced to only doing leisurely Sunday morning rides in the summer.