Why is longevity important to the survival of the Human race?

Longevity allows people to learn "HOW TO STAY ALIVE THROUGH ANYTHING". It is an attitude, a diet, a state of consciousness, exercise, etc.

When you move and think in certain ways you are likely going to live longer and longer especially with a good enough diet when there aren't a lot of wars and chaos here on earth.

So, the people that learn how to survive a long time then teach younger people how to do this and then many of them survive over 100 too.

Most of this is about precedent.

IF you don't know you can do something often you can't or don't. But, when you realize you can or might you then strive to do it often.

Also, the tricks of how to live a long long time also helps societies all over the earth learn how not to kill each other. It teaches how to get along with each other, how to practice birth control so we don't all die just from overpopulation etc.