Wow, don't you realise for one second how uninformed such a sentence makes you look? If you had bothered to do your homework: aka typed in Google "most happy nation", Google would have come up with Finland.....
By US weak social standards considered to be an ultra socialist country and - surprise - collectively rich, happy and healthy :)
It's all about smart governance to achieve optimal physical and social allocation of resources. (without the misuse of violence) Something the US has a long and steep learning curve still ahead of her.