The idea of improving one's "quality of life" is universal and old as dirt. The Buddha was disillusioned and looked to improve his quality of life despite already having all the supposed trappings of happiness.
I was once addicted to alcohol and drugs. My neighbor never was. We both encounter "quality of life" issues. We both have ups and downs. We both encounter problems and work to solve them the best way we know how. We both have joys, we both have sadness. To think that mine are different or special or I go through something entirely different in the process of building a "quality life" because of my past addiction is really pretty self-centered of me. To think that I am lacking some ability to improve my life that my never addicted neighbor has just by virtue of never having been addicted is also misguided.