Rather than worry about what's going to happen in the next five years, I like to think about what the world will be like in my golden years. I have about 30 years until then, so let's do five minutes of math to see what it will be like.
We can forecast relatively securely, because we know roughly what the depletion numbers are. We use very advanced technology to extract oil from the ground, it's the best money can buy and the best that America can put out there. The biggest oil field in the world is Ghawar, and depletion stats on Ghawar are not totally conclusive. Cantarell, though, that one we can nail down. Cantarell is the second largest oil field in the world, and it is depleting at a rate of at least 8% per year. Bergen in Kuwait is depleting by at least 8% per year. It seems to me that a conservative estimate of world oil production depletion can be calculated at 8%.
If you are an investor, then you know all about the Rule of 72. Take your percentage growth in an investment, such as an S&P 500 index fund, and divide the percentage return into 72, and that will tell you how long it will take for your money to double. Conversely, take your depletion rate and divide that percentage into 72 and that will tell you how long it will take for your investment to be cut in half.
8% into 72 gives you nine. Nine years for oil production to drop by 50%.
18 years for oil production to drop to 25%.
27 years for oil production to drop to 12.5%
36 years for oil production to drop to 6.75%.
As my golden years set in, and I relax into retirement, I can watch oil production drop from 6.75% of today's production to roughly 4%, and as the first half of my golden years fall away, we can watch oil production decline from 4% of today's production drop to 2% of today's production. If I hang on until the bitter end, I can see today's 85 million barrels per day drop to 850,000 barrels per day, shared among some nine billion people or so, if the most optimistic estimates hold true.
If I had a child today, that child would enter its most productive earning years as oil production drops 99%. Under those circumstances, I would be wise to choose the 4 cylinder vs the 12 cylinder.
Your mileage, whatever it may be, will vary.
Maybe God will invent something for us.