Thats funny you use those words. "I certainly wouldn't condemn"
Let us expand on the idea in the OP.
The idea is an expansion of knowledge.
People are constantly growing and we use examples to describe that growth like, "Dont judge me on my past, I dont live there any more"
Growth normally comes from revelations we've had that expand our way of thinking in one direction or another. We are the sum total of our experiences.
Don't you think that meeting God would be one heck of an experience?
And in that experience you would come to realize that Heaven and Hell aren't concepts but reality.
Would you feel any guilt at letting people go to hell because you didn't bother to explain what you knew?
If I found evidence of a God different than my own, specifically a God that punishes people for simply not believing in him, I would keep my experience secret and do my best to hide this God from everyone. For one thing, he would fall under the definition of a tyrant.
And for another, if it is true that people who never had a chance to hear about God (babies, severely mentally handicapped, very foreign and secluded people, etc.) will be allowed in heaven for they had no chance, then there is no point in trying to tell someone, right?
If I had an experience that lead me to believe in specifically the Christian God, there are these scenarios I can imagine:
1) Those who never heard the truth are still allowed in heaven.
And considering how you said that if I describe this experience to anyone, it'll sound like BS, the best option would to NOT tell anyone. If they aren't aware of the truth, there is a 100% guarantee they will enter paradise. If I told them, there's a chance that they will not believe me, and so there is a chance that they might not believe me and then go to hell.
2) Those who never heard the truth aren't allowed in heaven either.
I never met a Christian who believed that. If it is that way, God is not only a tyrant, but an unfair tyrant.
Can I ask you two things:
1) Why exactly should people be thrown in hell if they do not believe in God? Why exactly is non-belief that big of a deal? To me, it reveals one of two things: God is an attention-horse, or that the religion teaching that stuff is simply deceiving people into it.
2) If I keep my mouth shut and give nobody a chance to hear the truth, they are automatically going to heaven. But if I tell someone, it spoils their chances to enter heaven. In that case, why isn't keeping silent of the word the better option?