Wealth can keep you alive, in so much as you are housed, fed, can have materialistic possessions, and not have to go through each 24 hour day as a grind, a chore, a desperate clinging onto health and life. But it doesn’t buy self esteem, respect, intelligence, etc….. Some of the richest people on Earth are thick, nasty, bigoted, unhappy, lacking direction, bored, willing to break the law to get the next “best thing”. That’s why you get very rich drunks, druggies, sex pests etc……. They have the wealth to pursue whatever vice they might want to try, will have people queueing up to be part of their “inner circle” hence the reason why rich men (and less well documented, rich women) can prey on the young and vulnerable, wannabes desperate to be part of the rich scene.
I would say the best kind of happiness, fulfilment possibly comes through having just enough, being wise and canny with your income, focussing on the important aspects of life such as making sure children are well cared for, sharing good times together, being able to ride through a few difficult times. Everyone wants a better life, for themselves, for their children, but contributing towards that achievement, being able to think, yes, I did that, I worked hard, I made the right decisions brings its own happiness. Real grinding poverty hardly seems to make life worth living, but wealth on a plate won’t always bring fulfilment. It might just kill you in a different way.