Someone shared this with me and I it hit really hard.
https://www.pnas.org/content/112/31/9511

Basically our rapid energy use is eating up the earth's chemical energy and living biomass. The article states, "In just the last 2,000 y, humans have reduced this by about 45% to ∼550 billion tons of carbon in biomass, equivalent to 19.2 ZJ. The loss has accelerated over time, with 11% depleted just since 1900 "
The last lines are quite clear:
"There is simply no reserve tank of biomass for planet Earth. The laws of thermodynamics have no mercy. Equilibrium is inhospitable, sterile, and final."