what I fear most is the lifespan would soon decline to cowboy age where average life of the peasant is about 30yo due to the poor healthcare and knowledge, also based on barbaric cowboy beating each other on street trying to impress girls.
This will not happen with the rules and laws that the state has made for themselves to guide and lead them in their activities as individual countries and as global entity like we have different organizations that creates higher rules that check against human degrading treatment and inhuman acts. Like the UN universal human right declaration by the general assembly. This document ensures that their is dignity to life etc. There are other charters and agreements in other organisations by member countries to ensure human rights etc. So as a country and globally, human lives will not go back to the savagery, nasty, short, brutish as Thomas Hobbes described in his book state of nature.
Life expectancy has increased substantially throughout the world over the past few decades.
The average person born in 1960 (from this year the UN began collecting data on the entire planet) could reach the age of 52.5 years. Today, the average life expectancy is 72 years.
But the maximum human lifespan has not changed much - if at all. Life expectancy is increasing as more and more people live to old age. Medical capabilities are growing, but services in the field of increasing life expectancy are very expensive, so they are available only to the elite.
Scientists say that thanks to the development of science and medicine, people will soon be able to live to be 120 years old. But this is the limit, since the human body is programmed in such a way that with age, mechanisms are activated that lead to its death.