Ride and wear what you like. It won't be long before age sets in and limits you. I work in long term care, I have been warned. Granted, some of our residents are 106 years old, but I have people in their 70s who took care of themselves but their genetics got the best of them.

Doesn't mean I wouldn't feel a little strange riding, say, a $14k bike (ie. Giant with electronic DA) and not being a professional, but that is why I will limit my bikes to $5k or under which is still more than enough bike for me or anyone here. Even the pseudo-racer boys.