"Let’s do a thought experiment. Say the world’s proven oil reserves are 400 million barrels. And say world oil consumption is 20 million barrels a year, growing at 5 percent annually.

Question: when will earth’s oil reserves be 100 percent depleted?

OK, timeout. Before you grab a pencil and break out the scratch paper, I should warn you — the answer isn’t 14.2 years. Or 20.4 years. Or any other number of years.

It’s never."

https://medium.com/@andrew.chamberlain/why-well-never-run-ou...