I'm only 35 so I'm comparatively young but still older than a lot of my colleagues... I probably do not have the same energy or drive I used to, especially having a young kid at home, but I think in a lot of ways that's compensated for by having more experience to draw on. My hope is that holds up in the future.

There's nothing inherent about getting older that will keep you from being able to keep up with the young guns. It's just a matter of interest, as it is at any age.