If we all had guns, criminals wouldn't be killing people and crime rates would go down?

Do you really think so? Thinking back to the Wild West I would beg to differ.. Don't get me wrong.. I'm a gun owner and my definition of gun control varies between hitting what you aim at and admitting that people don't need a Howitzer for their Hummer... but seriously.. historically speaking I don't see this as a valid argument.. your thoughts?