First of all, examples of your dad and classmate don't prove anything. And secondly, I read that study on which that forbes article you linked below was based on. And yes they didn't find any significant link between video games and violence. I'd argue that's mainly because they isolated the effect of the games by controlling with other variables such as gender and trait-level aggression. Which means that clearly the researchers thought the same as I did in my last comment. That there might be correlation (and there btw was a statistically significant positive correlation between aggressive behavior and violent game engagement), so it's necessary to control other variables affecting the matter to see if games are what is causing the violence.
It's kinda same with the female wage gap thing. Yes there is a wage gap but it's not caused by sexual organs but by other (personality) differences between men and women. E.g. men are more competitive, thus more eager to succeed. Same with games: if you are violent person, you are more likely to play violent games. That doesn't mean that you are guaranteed to play violent games. Neither does that mean that you can't play violent games if you are not violent person.
I hope you understood, statistics can be a bit pain in the ass if you are not familiar with the concepts. Basically I'm just arguing against that "not even correlation" statement, otherwise you are right )