Humans have existed for between 200,000 and 300,000 years. At least once during that period, 75,000 years ago, we were almost wiped out. We were down to 15 million people. Right now we are over nine billion.
Prior to humans, there were five great epoch periods of life destruction. Each has a name. They occurred about 450, 375, 252, 200 and 66 million years ago. Each epochs wiped out the majority of plant and animal life. Often, they occurred because of volcanic eruption and meteor strikes.
In the Red River Valley of the North, we know a great glacier was present and began to melt at the end of the ice age, 10,000 years ago. As weather became mild, food production increased and human population expanded around the world.
The gods people created since then have been optimistic, seeing man as the master of the earth. People moved across the globe hunting and clearing land.
The majority of scientists around the world are convinced this human activity is contributing to the next great epoch, the one we are experiencing. It is called the Holocene Epoch. Mass extinctions, which go with epochs, are defined as losses of 75% of species in a short period of time.
While, of course, there is disagreement about this, there are scientists who predict our current epoch will cause food shortages so severe animal/plant species will fall as they did in previous epochs. World human population will be reduced from its current nine billion to 500 million all living near the north/south poles.
We will need new gods to explain all of this.