We are living in a fool's paradise, by which I mean we have been burning what we want for the least of reasons and encouraging each other that the fuel is boundless, and the wastelands where we dump are boundless, and yet since the photograph of the small blue marble we've been shown that we have one planet, we can encompass it, and there is no ready alternative.

We don't know for sure if fusion is an answer or another problem, but it's an interesting possibility.