tall73 said: ↑
The scenarios are not parallel.
In the kidney scenario the person who is donating did not bring about the need for a kidney in the person.
In pregnancy the people engaging in sex did bring about the need for the baby to live in the uterus.
Would I be upset that I would die? Yes.
Would I be upset that you wouldn't donate? Yes.
But I would not hold you responsible, because you didn't cause the situation. So I don't see an obligation on your part.
But if you engage in sex and it results in pregnancy, then both parties that participated are responsible for the life that is brought about by that decision.
tall73 said: ↑
Do you think a man having sex with a woman should have to pay child support if the birth control methods used fail? What if he didn't want the child?
He is required to pay child support because he engaged in an act that can lead to life, even when that is not the desired outcome, and even if prevention methods are used.
I did not say they involve all the same burdens or risks. I said that we hold the man responsible because he participated in an act that led to this new life. And we don't let him out of responsibility if he says he didn't want a child, or birth control failed.
The woman made the same choice to engage in sex, knowing that pregnancy could result. If he can be held responsible based on his participation in the act, she can also.
Your scenario avoided the notion of responsibility for the ramifications of one's choices. But that is part of the equation in the vast majority of abortions, save those where rape was involved.