Newfoundland, I agree with you on some of your points. (And this is so religious, not political ramblings.) In a nut shell, Jesus said the only unforgivable sin is to not accept Him into your heart, to cleanse you of sin. Before Jesus paved the way, works and good deeds were the only hope for getting into heaven. That's where all the Old Testament laws came from. But after Jesus sacrificed Himself for our sins, those laws were no longer needed.
As for your belief in Darwinism, well even Darwin denounced his beliefs on his death bed and became a Christian. God created the heavens and the earth and all things between. He created man, and from man's side, He created woman. He did not create a primordial ooz that man eventually crawled out of.
And finally, you must not have studied many religions, because in the koran (qur'an) it teaches that all "infidels" should be killed. "Wage war and bring death on the infidels who dwell around you." Infidel is literally translated and unbelievers in the "One True God" or as they say, Allah. Since Jewish and Christian people are considered to believe in God, but not worship properly, they aren't to be killed by traditional teachings (though it does teach not to associate or do business with them), however islamic extremists (ie Bin Ladin) teach that any non-islamics should be killed. Under literal/traditional islamic teachings, all atheist and agnostics should be killed.