I would rather marry the person. If she happens to have kids, why reject her on that basis? Such a pathetic question.
Having kids is part of the "person". Every decision you make in your life is part of you as a personality.
So your answer could be pathetic as well.
It's just another angle.
If you want to marry someone who has kids, it's your decision, or emotion, or whatever, but some people have maybe other priorities.
Being able to feel the joy of having a kid for the first time and sharing that experience with the person you love the most, who also goes through the same as you, is one of the richest life experiences I can imagine, if not the most valuable one. If you don't care for that, or want to "sell" that, nice, but it can also be called "pathetic" if someone wants to be rude.
People who have kids are kinda in another generational level, not in actual years measure, but life experience level, so it's like marrying someone who is a generation above you and who is able to hold your hand in the process, like a parent-child relationship. Not fun. but some people like it, and even some presidents, like French.