Ah, the 'Merican obsession with the "best." There is no "best" in absolute terms, only what fits your personal preferences. But that's not something you can easily jam into a database and algorithmically spit out a list. Drill into each category and you'll see how meaningless the data is. Quality Of Life is really about quality of drinking water, voter participation, etc. These are somewhat important, but there's just not that much variation across the US. For the most part about 40-60% of voter participate, and our water is generally safe to drink. How many people really care how many violations per 100k, or if the difference is 4/100k vs. 6/100k?
The ranking is meaningless because at the core it compares small differences with little appreciable difference in practice. It's scaled up Tiny Details Exaggeration Syndrome. For example: The deep south that the blue states love to pick on. Yes, the climate sucks (esp. summer), and they have their problems, and would not be my first choice location. But people adapt. Contentment and happiness have more to do with your attitude than the environment.
