OK, so for socioeconomic mobility between generations I get:
Life expectancy rates show the US is behind OECD countries while Iceland is greatly ahead, especially at birth (high infant mortality in the US).
Meanwhile health care costs are growing at faster rates (of already much higher costs) in the US compared to OCED, and more-so compared to Iceland.
A lot more Icelandic children are enrolled into education than Americans.
Poor people in Iceland have a ~70% chance of going to college while it's only ~30% in America.
Peacefulness isn't really even a comparison. Iceland ranks as the most peaceful country in the world while the US is 99th. This takes into account
many factors: perceived criminality, number of security officers & police, homicides, incarcerated population, access to weapons, organized conflict, violent demonstrations, violent crime, political instability, political terror, weapon importations, terrorist activities, death from conflicts, military expenditures, army size, UN peacekeeping funding, nuclear/heavy weapons, displaced people, relations to neighboring countries, and current conflicts.
On every measurement, Iceland ranks better than the US. To claim the US is a better place to live than Iceland is to be anti-number.