I think guns are important. I wish more people used them to hunt and that more of our meat came at the end of a gun.
I don't own a gun and would never own one because I don't trust myself not to kill someone with it in a tense situation. If the extremely rare situation happened where someone I love was threatened and I had access to a gun - I'm not sure I'd be able to refrain from shooting them, an act I would regret for the rest of my life (even if it made sense at the time).
So I keep the temptation out of my reach - much the same way as I try to keep ice cream out of my house.