Maybe you haven't read the daily news stories about home invasions and other crimes against law abiding citizens. And the stories about failed 911 services (PLEASE HOLD!). The police may be minutes away, but the reality is your life and that of your family can be snuffed out in a matter of seconds.
If you want to live in some pink pixie dusted Utopian fantasy land where there really are no bad people out there who want to do bad things to you, knock yourself out. But don't you DARE tell US what WE should and should not own, SPECIFICALLY when it comes to protecting ourselves from the evils of others.
All I can say is that I'm glad delusional pacifists like you weren't in charge of this nation circa 1940.