Violence against us is real. In fact violence against anyone is real. The police aren't always there to protect us, so it's our responsibility to protect ourselves.
A good self defense course is certainly an awesome place to begin, but some of us prefer to assure our safety and the safety of our loved ones through lawful carrying of firearms. i.e. getting a state issued concealed carry permit
I carry a S&W TAC40 9mm in my purse. I've never had to use it, and I sincerely pray that I never need to brandish it, but I feel a lot safer knowing that I can protect myself if required.