And the biggest catastrophes we will experience in this modern life... are almost exclusively due to the energy credits we spent by burning the eons-old reservoirs of solar energy, of dead plants and animals.

Honestly not sure it's a win. Maybe they had less, but they had not destroyed most trees, mammals and insects (which we have already), and all that for what? For a future where we will most likely have much, much less energy, and therefore where most our modern system... will collapse.