Why should men have to take responsability for their children?

No, we all dont know that a "man" cant commit to one woman and No its NOT natural instinct to go around having sex with every woman who he comes in contact with. Its only the childish immature boys (not men) who does this. It is a mans responsibility to take care of his children because those are his children also, not just the womans.....it takes two to create a child and it takes two to raise a child. So if you're going around "planting your seed" in every woman, you're an asshole and your going to have a hell of a time paying for all the child support.