Seeking the beauty of nature, Americans just can’t stop building houses among trees that will, sooner or later, go up in flames. "It is truly a when, not if," Sean McVay, a homeowner in Evergreen, Colorado, said of the threat that a wildfire will tear through his wooded community in the Rocky Mountain foothills west of Denver. But that doesn’t mean he plans to move. McVay bought the house last year. Like most homeowners there, he’s an outdoor enthusiast. "Being part of the wooded environment is a big draw," he said. McVay is not alone.