J.P.
I certainly don't think divorced women w/kids shouldn't date but everyone's entitled to their own opinion.
It sounds like they just need someone like a Big Brother in their lives or something (Big Brothers/Big Sisters program)?
They would probably also benefit from some counseling to work out the feelings they're having.
Sounds like you're doing the right thing by not going back to him... don't settle for any less than someone who treats you like gold! :-)
Best wishes,
J.