I'm not sure I understand it when people say that age as nothing to do with cycling, because surely it has? If it didn't, you wouldn't get professional cyclists retiring from competing at a certain age. While I'm sure you can be a pro cyclist at any age you want, surely the whole point of being a pro, is so you can compete with the best?
At that age I just don't think that's possible, but I hope I'm proven wrong. If I am, at least then I'll know there's hope for me too!