Beyond covering my basic needs and having some toys, I don't really see the point in spending all my income. Goods and services? I already have those - more won't bring me happiness.
Financial security means one less stressor in my life. A sunny day / early retirement fund means I can take more time off between jobs, on vacations, and be more aggressive about getting job terms I like. I can go out and have more experiences. I don't need to save up to buy the things I want, because I haven't wasted my money buying things that don't bring me happiness.