Your comments on diet and exercise are very good.  For one, we work more than any other nation in the world as far as hours in week.  We don't take vacations time we have awarded.  We are a drug addicted culture, with addiction created by an out of control drug industry using every tool of professional persuasion to market their own form of 'soma'.   Our capitalist economy creates great wealth which in theory provides improved infrastructure and things like public utilities.   But in the last 20 years those profits go less to the public and flow steadily into the hands of passive shareholders.

http://fortune.com/2015/09/30/america-wealth-inequality/

Fortune is hardly a liberal outlet.  I've looked at both income and wealth distribution over the years.  IMO wealth is the superior measure.   They are of course related.  Those with a high level or discretionary income can invest in equities, which widens the wealth gap.

Provide links and I'll read them.