Unless your violent crime rates were significantly lower than ours or Canada's, your gun ownership does nothing for public safety.
http://en.wikipedia.org/wiki/List_of..._homicide_rate
Granted, this is only homicide, but still.
Belgium scores much better than the US, and CCW does not exist here for regular civilians. In fact, gun ownership is strongly discouraged. It is a hassle to get all the paperwork done, a hassle to recertify annually, and if you use it against anyone not directly threatening you with deadly violence, you're in a heap of trouble.
And yet we fail to be overrun by violent criminals.
I am not arguing for or against gun ownership btw, but what gun ownership does for a society is much more complex than what you imply it to be, and the results are not straightforward as is shown by e.g. the difference in murder rates.