hard one to answer. i am currently 'dating' a man who is twice divorced and i dont hold that against him. he has step-children, but they dont live with him. i dont think if i would date a man who has biological children (either from marriage or not) - just because i am not ready for a family yet. (i gotta get rid of mine first - JOKING!).
so if he is divorced, sure i'd date him. if he has children...hmm...i'd have to think about it really hard. but most likely, no i wouldnt date him.