Well, I agree I think the problem is more to do with the system and it is the child that suffers. I think the mother is annoyed that he isn't helping and I don't believe that because he is locked away and is a bum that he should duck out of it all financially. There needs to be a better system put in place.
As for finding an ideal mate? Realising that he was a bum in the first place and therefore keeping away from him, well yes I can agree. There are some men that you think fine, he's not an ideal mate, I'll keep away. However you don't know this guy. There are plenty of men out there who look ideal on the outside, have great jobs, promise you the world, wear a suit (if we're gonna stereotype what does and doesn't look like a bum). Yet after a certain length of time habitually abuse and hurt their other half. And these men surprise surprise can still end up in jail. No matter how much you plan things in life it can all go wrong in the blink of an eye that is the risk you take. Whether she chose a bum or not isn't my point, it's the system. The way he can hide from his responsibilities.
I've heard of some guys deliberately getting themselves into trouble with the police because they want to go back inside, run away from their problems. That's not right either for the state and the costs.
I'm trying to delve deeper into the bigger picture.