Life expectancy != quality of life. In the modern world many more people are alienated and kept alive when nature would release them. Many people are spiritually alienated. The newest version iPhone does not give meaning to your life. Neither does buying a bunch of crap you don't need every week off of Amazon.
What does it mean to be spiritually alienated? I think also you are projecting a large part of your own unhappiness onto the world by suggesting that people are buying the newest iPhone to give meaning to their life.
I'm not going to claim life expectancy is equivalent to quality of life (although I do think it correlates). But I was just responding to the comment which claimed life expectancy had only increased in advanced countries.
