Should sperm donors be required to pay child support?

[Cincinnatus]

NO.  Why would I DONATE my sperm to benefit (most of the time) an anonymous woman, just to be financially obligated later.  I'd rather have my own child.  I think it goes without saying, that it should be common sense that these "beneficiaries" shouldn't expect child support, but as snowyguy said, it's probably necessary to make it abundantly clear