“If you want to know why the human primate behaves the way it does, I can easily explain:

1. human life span
2. human physiology at each stage of life="hormones"
3. our current state of evolution (still primitive in many ways).

Humans are the only species on earth aware of their own deaths. They aren't here for long so they are very concerned with the quality of their lives more so than the quality of the lives that will come after them. It is our life spans that trap us, make us truly incapable of long-term decisions which would require sacrifice we as a species are not willing to make.

Hormones: at each life stage, we are influenced heavily by hormones-raging levels in the young male or not, descending in the middle aged man or woman. Hormones also influence our behavior.

Lastly, we are not out of the oven yet as far as evolution goes, still prone to settle our differences through primitive means--greed and violence.

Here is a thought question for you-how would things differ if the average human could expect to live 200 years instead of 70+-?”