With all due respect, Sir/Madame:keesio said:This argument is old and happens constantly.
The USA can be better if your interest is mainly economic. The USA generally has more opportunities, higher wages, lower taxes and goods are cheaper.
For the more amorphous "quality of life", it depends on what is most important to the individual.
So there is no "right or wrong" answer.
The OP's interest is mostly economic so he prefers the USA. He's not alone - most immigrants are economic immigrants, looking for place with the most economic opportunity.
One of the differences between undergrad and grad studies is that in grad program students are taught to appreciate complexity of things and understand that some things are not black and white.
We love that "black and white" zone, it's comfortable, it pleases our senses and allows us to indulge, to make all sorts of arbitrary assumptions. The problem is it may not be true.
I don't know what most immigrants are, but I don't consider myself "economic" immigrant.
You don't have to be "economic" immigrant to realize that becoming homeless is a risky venture, especially when you have family and kids.
One may have (and probably most do!) more than ONE reason to migrate, or more than ONE or ANOTHER cause to stay or move. Having bread on table and not letting your kids become destitute is certainly ONE of those reasons, but stop being so categorical.
Let's be adults. Let's try to think like grad students for once.