He knowingly contributed to creating a human being.
The homeless woman will start collecting taxpayer money from the state to support her child created with the help of a man. He is the child’s father and needs to support it.
So, bu your reasoning, even though I had NOTHING to do with this creation, I should pay for this folly?
Logical fallacy.
The welfare support of this homeless lesbian has nothing to do with whether or not this guy donated his sperm and for what purpose.
By your reasoning, do all other sperm donors have to pay for child support also?
Based on your argument, blood donors are on the hook for supporting any children whose life they saved.