Virginia Postrel and Megan McArdle furnish the proper response to the National Kidney Foundation's argument that allowing people to sell their kidneys would "cheapen the gift" of those who donate and might be "an affront" to donors. Actually, the only affront to donors is suggesting that they would be affronted if regulated, paid kidney markets were allowed to save thousands of lives.

Sez Virginia:

The argument that paying organ donors is 'an affront' to unpaid donors is disgusting. Are unpaid donors giving organs to save lives or just to make themselves feel morally superior?

Sez Megan:

Having volunteered for Habitat Humanity several times in college, I am personally offended by the existence of Toll Brothers. Also, I've worked in a soup kitchen, so I'm suing Friendly's for defamation. As for hotels, as the former employee of an organization that provides homeless shelters, I can only say: have you no shame, sirs? At long last, have you no shame?