My theory is that we are in the extinction event and nobody wants to know it, cause then you have to do something about it, but it is not always possible to change where things heading.

All life takes energy to be considered life, we used to get it normally through photosynthesis, thats why all animals eat to get that energy captured by plants. But if you eat 2500 calories a day and spend 2501 you will die, though not as fast as if you spend 3000.

This is what is happening on economic level, all this economy is run on massive amounts of fossil fuels that have accumulated over millions over years and in last 300 years we have created huge ecosystem on it. Developed on expectations that we can burn more and more of it. Human population expands about 80 000 000 a year! But as amount that is possible to be produced cannot match what is expected things get grim very fast with very little divergence.

So yeah I know this doesn't help, but it is a logic behind why many things feel so futile. And brain and heart are two different beasts.

There are so many details, how much agriculture depends, how much soil is depleted, how much oceans are depleted. It truly is chemical imbalance, but on much larger scale than one little brain.

It follow https://en.wikipedia.org/wiki/Hubbert_curve and you can just see how tangent changes.