The Devil is the true Good Guy.
He doesn't applaud evil doing, he punishes and torments you for Eternity. If you're weak, you'll be tempted and BAM!!
God, however, rewards people for sucking ass. Confession and worship are surefire ways of making it "up there".
"So I killed my parents after raping them both with my next door neighbours cat, but will God forgive me?", "Say 700 Hail marys and suck my willy young choir boy". Tada, back in the good books
Just one more reason why Religion is so flawed.