Wasn't raised Christian, but had a similar experience. But I definitely believed in God, heaven, etc, because they seemed like facts of life. I just thought there must be more to it.

Anyway, precisely because I took these metaphysics seriously and at face value, and because I wanted to know more, I kept digging. And as any seeker of truth knows: if you keep digging at a lie, you will reach the bottom in short order.

I only had to wait long enough for my youthful incredulousness to fall away. What a waste of time... I couldn't been studying music theory or something...