Yeah, I was raised Baptist and started asking questions about that age. By the time I was 10 I knew that if god was real, he wasn't all that good.
That's about what it would take to get me to believe. I have two simple conditions:
1) Proof that the given deity does, in fact, exist.
2) That the given deity is
worth worshipping.
The second condition is actually somewhat harder to satisfy, because the deity or the deity's believers would have to prove to me that the deity has my best interests at heart, that the deity abides by a moral code similar to mine, and the deity chooses to act on my behalf sometimes.