1) Christians only really say things shouldn't be taken literally when it suits them. Slavery was fine, until it wasn't fine in normal life anymore and then they said, that's not really what is meant in the bible. You still see it with Homosexuality. The anti-gay crowd saying it's an abomination because the bible says so. In fifty years time Christians will laugh at the notion that they ever opposed Homosexuality because it will be such an accepted and normal way of life.
2) How would good stuff happening be evidence for God. He has said the opposite. He even used people thanking god for small trivial things as an example of how ludicrous it is. He pointed out that if there is an all powerful god, then he is Evil as he has the power to stop the suffering of the children and their families but doesn't or he is a benevolent god who would like to stop the suffering but can't. There's also the fact that Billions of people are destined to go to hell just because they have the wrong religious education. If a god cared enough about these people, why would they be damned to spend an eternity in hell through no fault of their own. Like an eternity in the worst place imaginable, being tortured for the crime of being unaware of the real religion. That is more fecked up than any justice system on earth.
3) I know in the catholic school I went to, as long as you confessed and truly meant it and did your penance, you were absolved of your sins. If they were teaching Christianity properly then yes, a child rapist and murderer would get into heaven, if he was truly sorry for his sins, before an Indian child who happened to have never heard of Jesus.
4) Not really sure of your point, so I won't address it.
5) In no other part of life is faith a good thing. Believing something in the absence of evidence or worse, contrary to evidence is not a trait we should be promoting.