Can money buy happiness? These people, waiting for hours to buy lottery tickets, seem to think so, or at least are willing to test the hypothesis (turn off your sound — the commentary is annoying):
What does science say? The short answer is that money can buy happiness, at least up to a point. The long answer is quite complicated.
A good starting point for discussion is this famous paper by Daniel Kahneman and Angus Deaton, based on Gallup surveys of US residents. From the abstract:
When plotted against log income, life evaluation rises steadily. Emotional well-being also rises with log income, but there is no further progress beyond an annual income of ∼$75,000.