The idea of quality of life is very twentieth-century. It sparks associations with ideas like statistical quality control and total quality management. It is the idea that entire human lives can be objectively modeled, measured and compared in meaningful ways. That lives can be idealized and normalized in ways that allow us to go beyond comparisons to absolute measures. That lives can be provisioned from cradle-to-grave. That an insistence on a unique, subjective evaluation of one’s own life is something of a individualist-literary conceit.
I suspect the phrase itself is a generalization of the older notion of modern conveniences, a phrase you frequently find in early twentieth-century writing. It referred to the diffusion of various technologies into everyday pre-industrial life, from running hot and cold water in bathrooms and garbage collection to anesthetics and vaccines.
That conception of the quality of life, as the sum total of material conveniences acquired and brutalities of nature thwarted through technology, seems naive today. But with hindsight, it was much better than what it evolved into: baroque United Nations statistics that reflect institutionally enabled and enforced scripts, which dictate what people ought to want.
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