I hve this in my "decline" article:
In the long run, we're all dead. John Maynard Keynes
On one hand you have the US were GDP has grown by X % over time Y, while median incomes have been stagnant. That's very bad and one can indeed question why the hell we should even care about economic growth at all in that situation.
On the other hand we have places like Western Europe where the elite might have increased their incomes by 100 % over time Y while median incomes have risen only 50 %.
While the first situation is horrible, the second is certainly not. Peak oil is not an energy crisis. It is a liquid fuel crisis.