The most violent game I played as a kid was probably GoldenEye and I didn't own it.
My mother had issues with me watching Pokemon because of the violence and didn't even let me watch Power Rangers. =(
Wait I'm a liar now, I played Diablo and Diablo 2 at a very young age because my Uncle was super awesome. I was likely 12 or something, give or take 2 years.
I don't spend an enormous amount of effort remembering last week, a decade ago is to much for me.
To spare everyone the long version, no, Diablo was not at fault for anything.
And vaguely related: School. For those of you keeping score on what actually was the primary blame.