There is no single place in the world that will be best for everybody. I have friends in South America who would never move to Europe or US. It's not that South America is better in some absolute way, but it is great at the things they value (including proximity to family). I personally would never, ever leave the US for France (or pretty much anywhere in Europe). For all the problems we have in the US, it's still on…
Equality of opportunity (including free healthcare for everyone, and same quality of education), regardless of where you're born, is one thing hardly discutable on an ideological point of view, whether you are conservative or liberal..
For no reason I would have my children think the state of the US healthcare or education is a good thing.