Depends. I work in education so I deal with kids 24/7. Someone with kids isn't a problem. BUT the situation is what brings the problems.
I generally don't care about baby mamas and the like as long as HE handles that. And apparently that's hard for a lotta men to do. Either they have to cater to the bmama b/c he's trying to work something out so they don't have to go to court, or they're in court but she still wants apart of his life.
What it usually comes down to is why he nutted up in some buffoon azz chick he didn't want in the first place? And has he set enough boundaries to ensure she knows her place. A lot of men won't admit it but they like the validation they get from having a woman going crazy over them even if it comes with drama. But don't get it twisted, he still wants u too.
But for the genuine men who aren't trying to be a modern day polygamist, as long as they nut up and let it be known to the Baby mama what's acceptable and what's not, I can work with that.
Ideally, all parties should talk about it. But of course it never works like that.