People like to say that American culture has a puritanical streak: one that entails, among other things, a certain haughty piousness, instilled by the killjoys who reached New England’s shores in the 17th century. Yet the Pew Research Center, in a pair of reports released last month, asked participants in various countries about a host of moral issues—and found few in the United States that were widely condemned. Spanking children? Doctor-assisted euthanasia? Clear majorities said they weren’t