If there is a G-d (and I don't really feel like getting into that debate) then he/she/it/other non-singular pronoun most likely didn't come up with all of this crap that has been made taboo by thousands of years of church doctrine. We have humans to thank for coming up with that wonderful stuff because we as a race are monumentally stupid.

Oh and of course since I'm Jewish we take a completely different view of the sin stuff. Basically human beings are falliable creatures and both humans and G-d know this. So we have Yom Kippur which is the day of atonement where we have to think about our sins and why they were bad and ask for forgiveness. However that doesn't make us like them crazy born again types because the holiday happens every year. The expectation is that even though humans are able to realize that they have sinned and even tell right from wrong before they do something, doesn't guarantee that they will live free of sin. So we get the opportunity every year to reflect and realize what was bad. It's more important (at least to us Jews) to realize that something was a sin and move on than to condemn someone to hell for one sin and have nothing they can do about it.