Led Zepplin came to town.......
To preach about getting back to nature, they used 75,000 watts of amplification to do it.
The French probably have the energy conscience you suggest, why the women even avoid electric razors.
I tend to find so much idealism on this site (with respect to energy conservation), coming from people with gaming computers with 650 watt power supplies, sitting in air conditioned rooms, not allowing the computer to go to standby so as not to incur "thermal cycling damage", then handing to electric bill to their parents, as to question any credibility from them.
You have no idea what you're talking about with respect energy usage required to compress air. It's easy to subsidize energy usage by a government, just hand the electric bill to your parents, er, I mean taxpayers