Families[Kids/Parents], who'd have them.
I may guess what it mean, but I'd like to know the meaning clearly.
Does it mean "Nobody can stop my families[kids, parents]." or "Families do any good?"
Not a teacher.
A little context may help with what you want to learn. It's a little vague as it stands. Here are some possible meanings:
"Kids. Who'd have them?" could mean: (I don't see any reason why people would want kids, so) who'd have them?
Such a statement could also be meant sarcastically to poke fun at having kids, despite the speaker wanting children of his/her own.