I'm going to answer these simultaneously. As a Christian, I find the evidence for God's existence absolutely staggering. The human mind. Life. Love. Math in nature. The fact that the universe is so beautifully diverse instead of providing the absolute basics of humanity's needs in every shade of the color gray. My personal relationship with God, and what He's done in my life. In my opinion, we're practically drowning in proof for His existence.
Reminds me of the girl (who dies) in Bridge to Terrebithia, she points out that God isn't all vengeful (in reference to the main character's sister saying that she doesn't believe in the Bible or whatever it was meant she was going to hell), because he was to busy making all this (she points around to the natures in the world). It is indeed a nice semblance, but on the retrospect as you mention of course won't give some people a peace of mind. :S
But this too comes from experience... Not just faith... Let's say a child who comes from a family who believes in God, and the child believes in God too, suddenly the child's parents die. While an adult may take this as a part of life etc. The child may believe that this was more or less done on purpose and feel themselves to blame etc. Perhaps this guilt leads to Atheism (of course there are worse outcomes but we understand what that could mean), needless to say this is probably part of the reason why there are lots of Atheists these days, because of the fear tactics that Churches seem to place... It is not like it is difficult to deal with The Truth (as in what the Christians might believe), but rather that it may just seem so backwards to them). Of course being learned of religion as a child vs. an adult is two different things... That's why I don't wholly like the idea of introducing religion to a child at a young age... This doesn't mean that they will become deviants of course... because you can teach them morals found in the Bible that are relevant of course.
However, not everyone recognizes these things as evidence. Again, it comes down to a choice. My question is, "how much evidence do you need before you're convinced?" I'd wager that even if God Himself came down and stood right in front of certain people and even jabbed them in the chest with a finger, they'd put it off as some insane daydream or momentary psychosis.
I believe that God merely got the ball rolling, so perhaps he knew for example he was going to create trees and everything else, he just did it with one event (such as the theory of the big bang), it's like adding precise ingredients. What about that show 'Touched by an Angel'? XD To prove evidence they had that Heavenly light, which in itself was kind of cheesy but I guess still proved evidence enough. XD
As in He already knew. And it's not fate, per se: He knows what you're going to pick, but you still have to pick. If it was fate, He'd just make a bunch of people and put some of them in Heaven and some of them in Hell. The choices are still there, He simply knows which way you'll choose. In that regard, you're deciding your future, not Him.
Ah yeah, that is what I had addressed in my thoughts before, namely that he already knew it, we just didn't know that he knew it or rather that it was fated that we were supposed to do it.
Fate is an interesting thing though... I mean, if I were fated to kill someone, would it be right for me to go to hell? Even if it was (more or less) against my will?
When we die, the veil of humanity will be pulled away, which is what causes us to be imperfect. So basically we will become perfect when we enter Heaven, or in other words without sin.
I wouldn't call human nature so much as imperfect, more of an "experience" but I essentially agree with you there. That all of us will end up in the same place, with the same understanding and same semblance (but regardless of what was done in the mortal plane).
OOoo there is also the debate of innocense and experience in terms of death. What if a child who was born of a satanic family, beaten everyday, and yet believes in the satanic figure (or equivalent) because the child had been indoctrinated at a young age; would that child go to Heaven or Hell?
All in all, I know where both sides are coming from, and as a result have found my own values and faiths. :)