The fractions mentioned were of course hyperbole. My point was that giving away more of your income to your peers will create a more livable environment. For example as we talk about Mississipi and Germany:
- Infant mortality — Germany: 2.67 deaths per 1000 live births, Mississippi: 8.8 infant deaths per 1000 live births
- Life expectancy — Germany: 80.1 years, Mississippi: 71.9 years
- Homicides per 100.000 population — Germany: 0.933, Mississippi: 20.5
So the superiour disposable income in Mississippi surely does not help to keep their infants (or rather themselves) from dying more often.
But okay: you pay less taxes and therefore have more disposable income as people living in Germany. But it comes at a cost. And while well educated upper class people might not be as much affected by this (if they are lucky and don't fall victim to the resulting violence), this will shape the whole environment you are living in. Nothing else was my point. If I had to choose between more money and a less livable environment, or less money and a more livable environment I'd choose the later one. Money can buy you a lot of nice things, but unless you never leave your home living in a nice environment is worth more for a live well spent. And if you never leave your home, you should maybe wonder why.
By the way I live in Hamburg, Germany, where 34% of the population has a migration background, many turkish, arabian and african minorities. I never heard a single gunshot in a decade of living here. I have never seen a single person publicly using hard drugs (excluding Marihuana, Alcohol and similar things). I have once seen a used syringe and I live in one of the dirtier parts of the city.
Just like living in a noisy flat will wear you down in ways you don't even notice until you finally spend a few calm nights in another place, the environment you live in affects you as well.