There is a very strong argument that, because guns are available, even with scrict controls, ie: the availablity of stolen guns, increases the incidence of crime greatly. For example: how many shootings or school shootings do you hear about here in New Zealand? None- because no one has guns, so it's impossible for anyone stupid to get hold of one.
I do see what you mean and I actually agree with you and if I was in the same situation as you, I'd do exactly the same thing. I couldn't think of anything more important than protecting those whom you love- your family.