What do you mean, that the punishment for wives is non-violent? The steps prescribed in Quran end in the last being violent. As a believer in Quran, are you denying what it says, in clear Arabic? Also, why would anyone need to punish a wife? Do you believe that women should be subservient to men?
Why are atheists so obsessed with subjective matters? If you don't like it then don't follow it. You are free to believe/not believe in God. You are free to behave as you please. If you believe in certain parts of a book and not other parts then go ahead and do it.
Is it not better to discuss science which we can go out and test and verify and more decisively agree/disagree upon?
C'mon atheists, relax. Stop obsessing. If you are trying to put doubts in my mind about God and the Quran then it's simply not going to work or happen. I know I may sound arrogant but I'm in a position where I may lose my faith but my belief in God is not going to change.