I[d say it be reasonable to make the man pay half of whatever economical cost the abortion costs.
Assuming you just attempted to paint a picture of equality here, you just somehow managed to make your position even more ironically laughable.
Neither man nor woman ask each other ideologies on a one night stand.
Furthermore, the woman can still put the child in a foster home if she wants after she gave him/her birth. So it still makes no sense for the man to be bound 18 years economically if he doesnt want to and is willing to give up parental rights.
If you don't like the possible outcome of not being on the same page as the person you're having sex with- I would not suggest one night stands. (not with anyone who will be able to find you again anyway) If you can't take a few minutes to discuss birth control, you might just as well skip the last name exchange as well.
I'm pretty sure the father gets first dibs over fostercare.:cover: Assuming he hasn't already disappeared. In such a case there is effectively no difference. If the father wants to raise the baby, the mother still has to contribute to child support. She can not just wash her hands of it. If both parents want to give the baby up for adoption, neither one is responsible for providing economic support. If I'm wrong about any of this correct me.