[eli_gottlieb]

>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.

[pjlegato]

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".