Should a sperm donor be required to pay child support?

Say hypothetically a lesbian couple went to a sperm bank, got sperm, and got pregnant, should donor be required to pay for said child?

One would think that's easy right? Okay let's say the same lesbian couple couldn't afford the sperm bank and paid a guy for his sperm signing a contract stating that the donor is not liable for child support, ever.

In Kansas a judge ruled that the donor must pay in the second of the two scenarios. Which only shows, guys no matter how well intentioned the woman is, no matter what she signs contract wise, the courts will always side with the woman. And it proves that women who want this but choose not to go to a sperm bank cannot be trusted. I would not be surprised if they start going after sperm banks in the same way.

abcnews.go.com/.../story?id=21657212
Should a sperm donor be required to pay child support?
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