I remember that day, because the air was green and smelled like a science experiment.
The planet was not designed to accommodate us. We are simply one of the countless happenstances of nature. All kinds of things try to hurt us -- radioactive gases seeping up from the earth, UV rays from the "life-giving" sun, myriad life-forms living their own lives inside us, caring not a whit whether they hurt us or benefit us. We have evolved as all these forces have influenced us, and we will continue to evolve. Maybe in some millions of years "we" will be impervious to fire -- and water will be toxic to us.
Meanwhile -- fires, twisters, earthquakes be damned -- we can enjoy life.