for me it's pretty easy...I don't want kids of my own, nor do I want to be a step-parent. so i do not date men with children. i know it limits the field of men available, especially since i'm in my 30s, but i'm ok with that. and really, what man with children would want to date a woman so firmly against having children or being a parent? makes things much simpler for me personally, even if it does make finding an eligible man more difficult.