My first though, and I'm sure not all of it was inspired by my fire-bug-ness ... "That's ok, I've always got a big ol' gas can with me!"

While you may burn through sources, that doesn't mean that there won't always be new sources of fire, getting thrown onto the flames along the way. I think there will be fuel sources popping up that you can't even think of, right. (Aw, crap, who knew *that* was flammable?!?)