Another one: "Money doesn't buy happiness - but it solves 99% of the problems that make you unhappy." - GSElevator on Twitter
Another one: "If money can't buy happiness, I guess I'll have to rent it." - Weird Al.
That is so true. And money does bring happiness for people who just got some of it when they previously had none. Rich people I believe are not very happy. But they would be very unhappy if they lost their money. Money is desperately needed by people who don't have it.
Poverty does not in fact ensure misery. Victor Frankel wrote about surviving the most hideous depredations imaginable in World War II concentration camps. It was obvious from the first that a defeatist attitude killed you, and that determination to survive was essential. Knowing this helped me through many years of misery.
I recall a study that indicated the perceived disparity in wealth has a greater effect on how poverty is experienced than the absolute condition, therefore (the study argued) somebody living in poverty in a very wealthy society is likely to be more miserable than if they were living in a society where the majority were also in poverty. I'm not saying this applies to your example, I just thought it was an interesting factor to consider.
Determination is orthogonal to happiness. Survivor guilt over what may have been done to survive, demonstrates this.