You know, the questions you're asking are valid. But one might well ask "When there are other sources of clean, potable water available, why is it necessary, or even desirable, to drink water imported all the way from Fiji." Is Fijian water qualitatively that much better than it justifies the relatively monumental effort of transporting it to Manhattan for consumption?

I certainly won't deny that there are trendoids who glom onto this sort of thing as the latest cause célèbre, but to pass it off (as some commenters are doing) as mere trendy moralism or yet another "cause" repugnant to whatever brand of libertarianism is hip this month, is to ignore valid questions about the justice and justifiability of your actions.