I disagree. I see happiness as the ultimate goal.
In order to be happy I think one needs:
- The basics ie. food, decent shelter, safety...
- Knowing that loved ones have good lives.
- Feeling a sense of purpose.
- Room to grow ie. life is not just a hamster wheel.
- Knowing the world around you is a place with good people and no evil.
For some people feeling/getting rich seems to bring purpose, however even for them being rich is relative. Since when are you rich, when you roll in money like Bezos or when you have no financial worries and have more money than the guy next door.
Or to put differently I think that if the criteria I listed is fulfilled for the most part then most people will be happy, this is then regardless of where you live.
And as for the rich part - I do not think one from the rich part of the world can move from the to a shit hole place and be happy. Simply because there would be so much we would be missing, however if you have grown up with nothing and now people where you live have something then the situation is different.
It is no different than some people thinking McDonald's is the best and then change their mind once they have had a real burger. If all you know is junk food, then you don't think it is junk.