Nature...Nurture...be careful not to take the individual's responsibly for their own actions out of the equation. That is the problem with "It's the gun's fault" arguments. We deflect the blame from the person who made the decision to an inanimate object. It has been proven, time and time and again that no matter what your background, you decide the direction of your life. Sooner or later, you have to get off the 'I had a bad childhood and bad parents' routine and grow up. If you need counselling, get some. But don't use it as a crutch or a prop the rest of your blessed life. The main prob is that the public in general are too eager to give some sicko an easy out. If he's nuts, get him some help. But, for God's sake, don't pat him on the head and tell him it's just his upbringing! lol...