To prevent and handle fire in your home - buy and learn to use a fire extinguisher to protect your family & home!
To keep someone alive after an accident or a heart attack - Learn 1st Aid & CPR!
But for the love of society, absolutely do not buy and learn to use a firearm to protect your family & your home!
That's just your... (pick one)
A) macho/phallic obsession at work...
B) your southern/cowboy/neanderthal violence mentality, or
C) your inability to understand our new enlightened societal standards
In other words, don' t be a victim... unless you're talking about the threat of violence to you or your family. In that case, just call 911, and realize you're going to be robbed/raped/killed well before the police arrive.