[Scandiravian]

I agree. The graph basically just shows that compounded interest makes a big difference long term, but it doesn't address the larger issues from everyone saving

First of all, the money for a salary needs to come from somewhere, and if people don't spend, then that money can't be used for paying other people's salary

Going out for dinner is also a good way to spend money in an environmentally responsible way. You have to eat any way, but in this fashion you contribute to someone else's salary, if the restaurant is well run there's less food waste, and if you don't enjoy cooking, you can spend the energy you would have used on cooking for other things

To me it would be interesting to see a graph, that showed happiness during a lifetime based not only on earnings, but how those earnings are spend

I think it would show that the best strategy for optimising happiness is to spend on social activities and "experiences" over wealth accumulation and material possessions