Actually it's a common misconception that more guns = more crime. There's actually a good book titled "More guns, less crime".
http://www.amazon.com/More-Guns-Less-Crime-Understanding/dp/0226493636
I am SO glad to be living in America, where I have the right to own and carry firearms. There simply is no better tool to defend yourself with. And the idea that I would not be able to legally defend myself or my family, especially in my own home, is nauseating at best.
What has been recently 'rediscovered' here in America, is that when gun ownership INCREASES, violent crimes of all sorts DECREASE. Think about it: in my state of Michigan (and in about 44 of the 50 states) it is legal to carry a concealed weapon to defend yourself. The criminals don't know who has a gun and who doesn't. And in every state (and now also in the District of Columbia) it is legal to have a gun in your home to defend yourself (also no permit is required). Also, you have NO "duty to retreat" in the presence of a dangerous criminal, whether in your home or not. If you reasonably fear that your life is being threatened, you may use deadly force to protect yourself.
Personally I view it as an extension of my martial arts training. It gives me more options than just my hands and feet. Also, I teach all of my adult students, if they wish it, how to use firearms. At the very least, you must know how to use a weapon in order to effectively defend against it. Can you imagine being taught knife defenses without ever being taught how to USE a knife? I can't!
Owning firearms is a wonderful freedom to have and I have no doubt my family is safer because of it.