Define "life".
We might be the lucky 5%!
What they are trying to say, that change in hormonal levels will produce different behavioral patterns? Or that weaker and uglier body will form a new set of habits? That changes in the brain will result in less cognitive load. That watching stupid TV because there is no better alternative is what they call "better life"? Come on.
In a subjective way, it's whatever you make of it.