Well what you just said was my point. That people have a rebelious nature,so you can't just kill everyone who doesn't agree with you. Sure it would make you fear God, but would you love him?
Also I believe we can learn from someone elses mistake. For example, we don't go around dropping Atom bombs. Why, it may be because other people have bombs now. But also because we also know more about them. We have learned from someone elses mistake. (I'm speaking of the after affects at Haroshema, not the fact that it ended the war).
It's the old saying- If someone jumped off a bridge, do you have to jump off the bridge. No when he hit the water and died. That pretty much ended any idea's of me jumping!
But I guess it comes down to. Do you still believe in the Bible? Or in God? I know for myself, that is hard to answer completely at times. I want to believe that the bible is from God. That is why I said I think it is good that your son asks these questions. Maybe someday he will ask the right person and get an answer he can except. Or he might except that God has more wisdom than we and it isn't that important to understand every little detail right now. I sure wish I knew all the answers, but like so many of us. I am trying to start from a clean slate and just learn what I can. I don't sweat the little stuff. My feeling are if there is a God, and the bible is his word. Will feeling one way or another on a subject mean I won't go to heaven, or where ever we are going. It's a wait and see.