How many people commit violence, and how many people are victims of violence, are two very different things. You could live in a society where only 1% of people commit violence, and yet the remaining 99% are living in fear, because each of them was repeatedly a victim of violence.
But if you have 1% of people ready to initiate violence, and let's say 3% of people willing to use violence in self-defense, suddenly life becomes much safer for you, even if you are among the remaining 96%. Not because the bad guys would hesitate to hurt you, but because they are likely get in trouble before they get to you.
People often confuse these two numbers. For example, they look at some statistics and think "20% of women report having been victims of domestic violence... oh, that means that 20% of men must be violent abusers", and they don't realize that the statistics also include some violent men who abused five or more partners each, so the actual number is probably much smaller than the 20%.
Without wading into the "good guy with a gun" debate, tl;dr: almost no humans want to effect the level of violence required to execute a home invasion, even if the risk of being shot is zero. A big deal is made about guns as deterrents, but the simpler answer (and the one that explains why it's also safe in rural areas of other OECD countries with gun control) is that humans just aren't that violent--when there's enough to go around anyway. That's all I'm saying here.
How many people commit violence, and how many people are victims of violence, are two very different things. You could live in a society where only 1% of people commit violence, and yet the remaining 99% are living in fear, because each of them was repeatedly a victim of violence.
But if you have 1% of people ready to initiate violence, and let's say 3% of people willing to use violence in self-defense, suddenly life becomes much safer for you, even if you are among the remaining 96%. Not because the bad guys would hesitate to hurt you, but because they are likely get in trouble before they get to you.
People often confuse these two numbers. For example, they look at some statistics and think "20% of women report having been victims of domestic violence... oh, that means that 20% of men must be violent abusers", and they don't realize that the statistics also include some violent men who abused five or more partners each, so the actual number is probably much smaller than the 20%.