I heard a crazy fact (not checked but this person seemed credible) from an energy/oil expert on a podcast today. He said that humans have never used less of any energy source over time. Meaning, we use as much wood today as we did when we heated everything with wood and used it to build everything.
So our energy demand has just grown and grown, and as we develop new sources we continue to use the old sources just as much.
@alisynthesis
Whale oil too? That would surprise me.