I think less then most parents are deadbeats.
The reason why they are is very simple reasons.
I'm pretty sure that they don't mean to be that way, it's probably just certain things making them that way.
A important certain thing could be that the parent has many things going on in their life.
May be like their job activites & goals trying to be met.
Parents don't mean to be that way, it's just certain things that gets in the way, which makes them "Deadbeat."
There can be may things in what makes a parent good.
A good parent always finds time to be there for their child.
A good parent can make their child happy when they're the blame for them being sad.
A good parent understands their child, especially when they make promises; Promises must be met.
Lastly a good parent will always be truthful with their child because if the parent can be truthful the child will know what a real promise is or when your being truthful.
There are many other things to make a good parent but that is all i could think of.