Not every square inch of the planet earth is suitable for a housing development.
Flood plains are not great places to build homes. A grove of trees adjacent to a tinder-dry national forest is not ideal for a dream home. And California’s chaparral ecosystems are risky places for neighborhoods.
This is nothing new. While people many Americans who live back East may imagine that something must be deeply wrong when they hear about fires out West, the fact is things are different in North America west of the hundredth meridian. The West is more prone to extreme temperatures, hundred-year droughts, and fires in the wilderness. Many of these ecosystems evolved with this fire risk.