We're swimming against the stream, blaspheming the national religion (which ain't Christianity).
Correct. The national religion in America, Australia and many other countries is Economic Growth. I expect after this no longer becomes viable in its current form, traditional religious belief will return with a vengeance.
But I have tried to bring this issue up. Sometimes people agree with you, but also agree there's nothing much any of us can do about it, which is probably sad but true. Other responses have been more amusing.
"You don't own a car though, so you have nothing to worry about"
"The oil companies are sitting on engines which run on water, and just waiting until the oil runs out before they release them"
"The US government stockpiles lots of oil, enough to last years"
Mostly they just look at you like you're a little mad. But anyhow this will take decades to play out. There won't be a sudden collapse.