If you want to call that your personal theory about evil in general without connecting it to the Bible, whatever, go for it. It is not Christian or Jewish doctrine, it is not what the Bible teaches. I've presented to you Scripture that directly contradicts what you are teaching is the meaning of these passages. It is not some game to distort God's word. It is a very, very bad move.
Since you are apparently very shaky on Christian doctrine (see below) you can be cut some slack, but you have been given the proper information and you are responsible for it. If you really think spoiled kids are the source of evil, ask yourself if someone would be acting as anything other than a spoiled kid if they say "God's word says what I say it says."
If Jesus died on the cross to clense our original sin the one from the garden of eden, then why do people even get baptised to cleanse the original sin in the first place if it was already cleared 2,000 years ago? Seems redundant, doesnt it?
The baptism is a public sign that one is siding with Christ. It does not in itself cleanse sin. If you think it's redundant, then perhaps you can explain why Jesus commanded it as part of the Great Commission in Matthew 28:18-20?
Beliefs and theories must be actually based on something (besides personal preference or opinion)
or they are not rational.
Biblically based beliefs are rational.
Other theories/philosophies/beliefs are not.