But why? You must understand that any human capacity for violence and disharmony is sourced from god as per your religion at some point. Any human flaw really is on the being that supposedly designed humans, knowing they were flawed no less. Before you state free will, free will doesn't require one to actually be capable of anything they could want to do. I sure can't flap my arms and fly, but would you view that as a violation of my free will? If not, then god never giving Adam and Eve the opportunity to commit original sin (just never put the tree of knowledge in Eden in the first place) wouldn't have been a violation of free will, and the test truly unnecessary in every way. However, if you do view it as a violation of free will to actively limit options, then everyone's free will is violated constantly by our physical, social, economic, and mental limits. So it ultimately wouldn't matter if free will so frequently violated was violated a little more.