You are very welcome.Thanks for your explanations
Alex, I have bipolar AND borderline troubles, so I didn't point my finger on mental illnesses, I'm sick too... But as you said, we can live with our troubles without killing people and/or using illness as an excuse... But who knows, anyone, even mentally healthy people can snap for a reason... The question remains : how to prevent that.
I think we're all sick in some way, if that's the word you want to use.. mentally abnormal is my preferred term for it. And I agree, hopefully someday we'll figure out how to prevent things like this from happening without resorting to more extreme violence.