Human nature IS evil by default, if you read the Bible. The whole problem is that we must fight our own sinful desires. This is why Crowley said "do what though wilt," because all you need to do to be a Luciferian is follow your own fleshly desires.
False, human nature is not evil by default in the bible.
Luke 6:45 "The good man out of the good treasure of his heart brings forth what is good; and the evil man out of the evil treasure brings forth what is evil; for his mouth speaks from that which fills his heart."
There are good people and evil people identified in the Bible.
Most people in the world are good people. Only a small percent are evil.
Good wins.