By Tobias Carroll There are aspects of the natural world that are stunning in their beauty: mountain ranges, waterfalls and tropical beaches among them. There are also plenty of landscapes that most people would rather not spend time in. But even ecosystems that are inhospitable to humans are there for a reason. Climbing over sand dunes can be an annoyance, but dunes also provide a natural way to reduce the effects of flooding, to cite one example. There’s a similar argument that you can make for swamps. “Many modern Americans do not like swamps, herons or no herons, and experience discomfort,…