>For example, indoor plumbing was considered a grossly extravagant luxury for almost all of human history. Within the last hundred years, the richer societies have made laws (building codes) that have switched it to a "NEED". The same thing happend with indoor heating systems.
Yes, we rather do like preventing dysentery, bubonic plague, and flu epidemics. Public health is indeed a necessity rather than a luxury.
This is precisely my point. For almost all of human history, public health was indeed a luxury rather than a necessity. In many parts of the world, it still is today.
The details of a specific proposal are not relevant. No matter what specific items you choose for these categories, eventually people will want things you say are "extravagant luxuries" and call them "needs".
Yes, we rather do like preventing dysentery, bubonic plague, and flu epidemics. Public health is indeed a necessity rather than a luxury.