Continuing with what Leolaia wrote: there is a pretty well-established philosophy that humanking were actually better off after Adam's sin, because he took the adult step of thinking for himself and acting upon it. Sort of a primeval "live free or die" code of behavior.
There is also a rather back-water gnostic system of belief that the Satan of Genesis was actually the same as the Jesus of the New Testament - that he gave mankind free will in this sense, (because the YHWH would not) and later "bought them back to everlasting life" to make it even out.
I don't claim to believe either one, but I found them both interesting.
BTW - the JW view of earthly paradise pretty much reduces all humans left on earth back to the robotic state of Adam and Eve had they not sinned - thus, to my viewpoint - pretty much without free will again.