So, it took almost 100 years until the mainstream understood what should have been blatantly obvious to anyone who thinks about it: Oh right. Oil is limited.

I mean, sure, if we search long and hard enough we will probably almost always be able to find/produce something, but I don't think asking 1 million per liter of gas would be such a great idea.

Hoping that there will always be a scientific breakthrough just "right in time" to solve our resource problems is great. I love optimism. It's also extremely irresponsible to depend on it.

You mean "oil cautionism" based on the very well established fact that reserves are limited (and it took the billions of years to be created)?