Well that must be the way to go then -- since you've not had any issues the rest of the country is just fine.
There have been 4,000 US citizens killed by illegal immigrants - 4,000! This doesn't include all the other crimes like rape, torture, etc. Just because you see no need to have the right to protect yourself doesn't mean everyone else feels the same way.
False security -- WOW - are you delusional! I know people who've protected themselves - even elderly ones.
Maybe it's wise for those unaware to talk to professionals - like ex FBI agents, police, security guards, etc.