I think that the Ben Cousins thing is a bit of a beat-up though.
Bear in mind, the restraining order breaches he keeps getting charged for don't involve assaults etc, they've been phone calls/texts and turning up at places in an attempt to see his kids. Don't get me wrong, I can understand why you wouldn't want a drug addict having unsupervised access to kids (you'd think they could sort out some sort of arrangement with his parents supervising visitation or similar), but doing things like inviting him into the yard to play with them, then calling the cops to say "he's here, come and arrest him" is a bit low. I'm assuming she must've sorted out her own addiction issues (given she now has custody of the children) - I guess it's true that there's nobody as sanctimonious as a reformed addict?
I feel for the kids, neither parent gave them a great start in life. But as much as Cousins has ruined his own life, you do have to feel for a guy who also obviously desperately wants contact with his kids.