Diesel, or rather energy, is also a way bigger part of every single aspect of our modern world. Let's take drinking a can of coke as an example:

First degree: It came into your home from the factory through the shop. 80% product + 20% diesel.

Second degree: Product is aluminum can + water + ingredients. Aluminium came to be a can through 70% refined aluminum + 15% diesel (transport) + 15% electrical energy (pressing the can). Water was pumped locally: free from the ground + 100% electrical energy. Ingredients came from a farm: 80% local product + 20% diesel.

Third degree: Electrical energy came from 40% gas turbines, 30% hydro, 30% wind farm. Ingredients from farms came from soil 40%, 35% nitrogen fertilizer (== gas), 25% diesel (machines)

... and so on

If you decompose everything all the way, the global tally is either matter, which is given to us by nature for free. Or energy; The sources of which being vastly composed of fossil fuels. Fossil fuel prices affect everything.

These fossil resources being finite we can also conclude we're experiencing a centuries-long hay-fire. But hey, we're merely plateauing right now; and most of us won't be here for the harder part of the crash.

And I didn't even mention climate change.