Of course there's the angle of financial incentives, but to me it seems that modern society has chosen the easy path to deal with the health implications of our modern way of life - namely popping pills - instead of taking a hard look at our health problems and working toward long term sustainable solutions, especially for environmental problems.
The current COVID-19 crisis is a case in point. I'll risk being ground to a pulp by the HN community and say that IMO vaccines are one solution but not necessarily the best. To date they have provided neither herd immunity (very hard to reach on a global scale), nor long term protection (look at Israel).
A better solution would be providing a better environment - cleaner air and water, a less stressful life style, and better integration of human habitats with natural ecosystems. We know that the virus kills mostly people with pre existing conditions. A better long term treatment would have been to reduce those pre existing conditions - diabetes, obesity, heart and lung diseases. This can be done through better food, less work, more physical activity, and even more social involvement.
Sadly, modern society demands short term gratification over long term sustainable sobriety.