Haven't had one of these for awhile. This thread is for questions or comments that you've felt silly about not knowing/understanding. Let's try to exchange info that seems obvious, knowing that due to the illusion of transparency it really isn't so obvious!
I thought the same thing and went to dig up the original. Here it is:
This is from the consequentialism page on the SEP, and it goes on to discuss modifications of utilitarianism that avoid biting the bullet (scalpel?) here.
This situation seems different for me for two reason:
Off-topic way: Killing the "donor" is bad for similar reasons as 2-boxing the Newcomb problem is bad. If doctors killed random patients then patients wouldn't go to hospitals and medicine would collapse. IMO the supposedly utilitarian answer to the transplant problem is not really utilitarian.
On-topic way: The surgeons transplant organs to save lives, not to make babies. Saving lives and making lives seem very different to me, but I'm not sure why (or if) they differ from a utilitarian perspective.