I cannot believe the naivete of people, especially these days.
You are not safe. There is not guarantee for your safety, your life, or anything else other than the fact that you will be born, pay some sort of taxes, and die. That's it. Everything else is a variable.
Where I live (Shakopee), there is a gang problem, a minimum security woman's prison (not really a factor, but it's still there), and in the past few months, home invasions by heroin addicts while the homes are occupied, so having a gun (with all of the accompanying training, safety, care, maintenance, proper use of it, etc), is a good idea. In fact, my post along with every other post in this thread, really shows good reasoning why everyone should get a PTC and carry in their own home along with everywhere and anywhere else they legally can. I'd even go so far as to say buy a good concealable pistol for concealed carry at work if you can. (Obviously that won't work if your job is in a hospital or on federal /state grounds or anywhere else limited by law.)
My biggest obstacle is my wife who when she told of this first happening to other homes in the area, thought we should get a gun and stick in the drawer, and that's it. None of the care, safety, cleaning, maintenance, proper use, etc was ever thought about or mentioned. If I could get her to do it, I'd have her interested in guns and all of the things with them, including carrying as well as keeping the alarm system on 24x7x365 and to always carry her cell phone with her even in the house. At least she and I keep the doors locked all the time, but still, it's not enough.
I love my wife, but I can't be there to protect her all the time. Each person needs to protect themselves, and that includes not making it easy for criminals with unlocked doors, running vehicles, etc.
I must add the caveat, I've worked in some high-security jobs in the IT Security field and have a natural protective/security-minded nature, so I'm probably more aware and paranoid than the average person.
...on a hopeful side note, one of my step-daughters went to the range with me for the first time this past weekend to shoot for the first time ever. She liked the 22/45 a lot, and so after a bit of practice, I let her fire the XDm .45ACP at a TSR-II target at 21 feet like you do when you shoot for your PTC; and for the first shots for her first tiem firing a .45, the first 7 shots all went center of mass. I told her that if she'd been shooting for her PTC, she'd obtain it with those shots. If the daughter can shoot, maybe the mom can too if she puts her mind to it.