I agree with your overall sentiment. But allow me some objections:

> There is this broken idea, particularly apparent in North America, but in western society that more is better for many things. It's not.

But it is. The faster I go, the earlier I arrive at a destination. The more I eat, the later I'll be hungry again. The more I pay, the more I can buy. The more I smile, the more people smile back. It's all-pervasive in life, and "more is better for many things" is just obviously true. Not for all things and there are limits of course.

> More pain killers don't do anything if they max out the relief they can give you, overloading their mechanism doesn't reduce anything, but taxing your liver or your kidneys.

A higher dose gets broken down slower, as in, the threshold below which the effect is reduced is reached later. Not a reason to damage your kidneys and better take smaller doses more often, but it's not fully accurate to say there is a limit and anything above has zero effect.