If the life span of a person reaches 1000 years, what will the world change?

The world's longest-lived creatures are turtles, lobsters, lizards, bowhead whales, and even a beacon jellyfish that can live forever.
The average life span of our human beings is only seventy or eighty years. Decades of life are like a white foal passing through a gap. In a twinkling of an eye, it has become a luxury for many people to live longer. Who dares to ask us who doesn't want to live forever?
If one day our human life could be extended to 1000 years, what would the world be like?
We know that everything has two sides, and there are also advantages and disadvantages to the problem of people's life expectancy reaching 1000 years.
First of all, let's talk about its advantages. If each of us lives for more than a thousand years, the time we spend with our relatives and friends will be greatly prolonged. Within a hundred years, if nothing happens, we will not have to experience death, but only life and death.
We can spend a lot of time doing what we like. The pace of life can also be slowed down relatively. We don't have to rush any more. And people can spend a lot of time learning. People will become smarter and wiser, and their civilization will rise to a higher level.
But if the human life span reaches 1000 years, the human will not die in a short time, and the slow metabolism will undoubtedly increase the burden of the earth, because after all, the earth's living space is limited, all kinds of resources are limited, and the world's population shows a situation of increasing or decreasing, which will certainly damage our living environment, resources become tense, and finally, in order to compete for capital. It's hard to imagine that Yuanyuan could also lead to war, conflict and even killing.
The world's population capacity is relatively limited. If people's life span reaches 1000 years, it will obviously lose that kind of "balance", so it will lead to various problems, increase contradictions and conflicts, and finally can only go to extinction.
According to historical records, there is a person named Li Qingyuan who lived 256 years, but in modern society, people who can live more than 200 years are almost nonexistent. Only a few old people live more than 100 years. We all feel that their life span is long enough, but can human life span reach 1000 years in the future?
We do not know, after all, how developed the future of science and technology will be, whether it will be able to develop long-lived drugs, no one can say. Do you think that in the future human life will reach 1000 years?