Standard of living = how much your paycheck is
Quality of life = everything important, including your paycheck and ability to provide for your family.
In the us our stand of living is very high but our quality if life is, in my opinion, very low when compared to the rest of the developed world. Yeah we're better than Greece and Spain but trailing 50 years behind most of the rest.
What good is making this extra money if you have no time off, poor schools, high student loan debt, stagnant wages, expensive and cumbersome healthcare, no maternity leave, no pension plans, no job stability, and pretty much everything caters to the top 5% of the population.
Those who can't grasp that making $50k and getting a ton of time off, a nice retirement, and lots of benefits is far better than making $70k but getting no benefits baffle me. You must all be making $250,000 a year.