You're at an advantage, like the rest of the younger members. The earlier you start with RM, or computers and drawing, game design in general, you're already ahead of some of the older, more talented members.
:p I found a game design folder from when I was 8. Yay.
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I think that it is agreed upon that game design from hobby-> work, is not a good approach to the career. However, who else is better than those who enjoy it and are actually good at the little things? Especially those so young.
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I don't think I would be a very good professional, though. I'll just make indie games till I die. :3
And assuming I live until 86, I still have 72 years. :D