Well, that's the thing, right? If we were thinking about humanity as a global populace, the second (bear the burden of that through taxes) would be the obvious answer, for precisely the same reason Americans in Florida pay taxes into a FEMA system to address wildfires in California, even if they never visit California. Besides ideological reasons, there's also the practical that that same FEMA is going to help Florida the next time it's hurricane season.
The concern about suppressing local agriculture is relevant (although I do wonder if one can make the same argument regarding FEMA and "suppressing local blue-tarp manufacturing"). But if food rots while people starve, the taxes probably aren't high enough. We've recognized (in the US, at least) the role of government in distribution and management of distribution policy since at least the Great Depression.
The concern about suppressing local agriculture is relevant (although I do wonder if one can make the same argument regarding FEMA and "suppressing local blue-tarp manufacturing"). But if food rots while people starve, the taxes probably aren't high enough. We've recognized (in the US, at least) the role of government in distribution and management of distribution policy since at least the Great Depression.