Basic public sanitation measures, including isolating human waste from open air spaces, is the most significant factor to increased average lifespan than medical technology. Reverse that in even just one of the legs of basic sanitation and you invite in a host of (in America) extraordinarily expensive pathogenic consequences. Expensive to treat and expensive to prophylactically ward off after an outbreak starts.

Like code defects, it is magnitudes cheaper to fix earlier in the development pipeline.