A friend just e-mailed me and told me his ex- (mom of their 2 middle-school-age kids) has cervical cancer "issues," and he's taking care of her because their kids need their mom. Given what has transpired over the last couple of days, plus my friend's news, I'm damn near in tears. Married or divorced, kids need their parents to be there for them -- even if not at the same time.
Compare this to the Benoit situation. My friend on good terms with his ex- for the sake of the kids vs. MURDERING his offspring for the sake of......what???? What the bloody f*** could have driven Benoit to premeditate this the way he did???
First, my deepest respect for your friend who can put aside personal differences for a greater good. It should be normal behavior, but it is rare, and he is to be commended.
In response to your question, I suppose there are only two possible answers: pure insanity, or pure evil, and sometimes, since I'm not a trained professional, I'm not sure what the difference is when the outcome is the same.