If it is a faith, to me it is not something that can be known 100%. If it can't be known 100%, how can you burn in hell?

I don't want quasi-philosophical arguments like "I know the sky is blue"....when in fact it is violet to birds because they can see a larger band of frequencies.

My point is, how can you know 100% that there couldn't exist an alternate explanation for what you think is a god?

If people are condemned for their inability to believe, then God is not good. It's as simple as that. Of course Christians have to deny reality and they have to insist that ALL have the ability to believe and that they just don't want to, or choose to disobey God. Otherwise, their Bible won't be true.

But the fact is: many people cannot believe. And that's reality. And God cannot be good if he burns them in hell.