Because unfortuantely, there are people out there who want to kill you and your family...but the analogy of the seatbealt and the airbag is a flawless argument. Most people would not even think of not having them, despite the low risk of needing them
I disagree.
Unless you live and work in a very dangerous part of your town and do not drive, the odds of you being murdered are much less than you getting into an automobile accident. So that is a poor comparative analogy the way you take it.