This leads to the general topic of the difference between being ethical and feeling ethical. Much of what our moral intuitions tell us is in contradiction with what we think are worthy principles. We like to think life is worth a lot for instance, yet in practice life more than a few miles away is worth nothing unless we are personally acquainted with the potentially deceased. Even if we calculate that organ markets would benefit users, many of us feel bad about them. What do you do when feeling virtuous comes into conflict with doing good? Most people go with their feelings.
This underappreciated truth comes from an interview with the very wise Katja Grace, who also defends thinking over reading. In the spirit of this quote from Katja, I would just like to say to Bryan Caplan that even though it feels very wrong, I don’t mind if you have your clone.