This is the only predator I have ever felt bad for.
I suppose it's because he has a baby face, and he's pretty much just a kid himself.
I honestly don't see him as a computer predator, but just a dumb teenage kid who didn't think clearly, and mentally, probably saw himself as a 13-year old, not aware that he was an adult. Society kinda babies kids now, so many of them don't really mature until they're like 30, and mentally, they still think and act like teenagers, and even see themselves as one through out their twenties. I know not everyone is like this, but plenty are. I think that was the case with Richer. And given that he actually was a teenager, it's not too shocking that he made this error.