Well, in this, my final post related to Stranger Than Fiction (for the time being, at least. I make no promises about eternity), I'd like to throw out a quote from a character whose name I've forgotten but I call in my head Awkward-Friend-Guy. In response to the question what he'd do if he thought he were going to die, he said, "Easy. I'd go to space camp." Bear in mind, this guy is at least 30. When the MC asked him if he weren't just a little old to be going to space camp, Awkward-Friend-Guy replied in all seriousness, "You're never too old to go to space camp, dude."
"You're never too old to go to space camp." You are never too old to go after your dream. (If your dream is to run with the bulls in Pamplona, I might suggest rigorous training in advance and getting on that goal now. But who am I to set an age limit on running with the bulls? You know your limits better than I, bull-runners.)
Let me expand this to both ends of the spectrum. You are also never too you to start pursuing your dreams, either. You are never to young to plan the adventures you'd like to have, write that novel, learn to speak Portuguese in preparation for the day you get marooned in Lisbon by your pirate comrades.
Age is rarely a factor in what you want. (Unless what you want is a driver's license, in which case the government might take issue with your time of birth. DISCLAIMER: I am not encouraging anyone to violate the law of your state/province, your country, or physics. Please check with your local officials and appropriate medical person before attempting bullfighting/flight/marionette racing, etc.) The right time to start going for what you want is now.
Don't let anything hold you back. 'I haven't seen enough/done enough/learned enough.' You can learn more, figure out more. Get smarter, get wiser. These things can be achieved. They aren't time sensitive. Strike while the iron is hot and get what you're going for.
Do you often feel like you're questioned about what you want or feel unable to achieve it because of your age level? How important do you think age is to writing? Does age correlate to experience?