How common are truly dangerous predators compared to normal men?

Ok I was reading about the case about a 7 year-old girl that got sexually assauted and strangled to death by a FedEx delivery driver. She was agonizing in her final moment, asking for her mother, where he's taking her, if he's a kidnapper and he didn't care. He was a sick person. This is the link to it

https://www.cbsnews.com/texas/news/tanner-horner-guilty-plea-athena-strand/

I actually got into the wrong car by accident once when I was 5 years old. I'm not sure how many minutes passed when I was in the backseat but it was a while. Luckily the man called the cops immediately when he found me. Unlike that psycho, he was a normal guy with a family that returned me to my worried parents. He actually got scared himself and thought he could've gotten falsely labeled as a pedophile for doing the right thing.

Yet there is always someone crazy and sick out there. Would you say I was lucky to have stumbled into a normal man? Think about it. I could've easily been killed right there just like that little girl. Out of so many random strangers out there, how many would you say are normal people trying to do the right thing vs the real psychos?

How common are truly dangerous predators compared to normal men?
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