The following is from an article on “happiness economics” here.
The policies most conducive to human wellbeing turn out to be essentially the same ones that Einstein himself originally suggested: those associated with social democracy. In reviewing the research in 2014, Adam Okulicz-Kozaryn, a political scientist at Rutgers University-Camden in New Jersey, found that ‘societies led by leftist or liberal governments (also referred to as welfare states)’ have the highest levels of life satisfaction, controlling for other factors. Looking across countries, the more generous and universalistic the welfare state, the greater the level of human happiness, net of other factors.
As the article goes on to admit, not a sentiment that most Americans would readily subscribe to.