This is true. Back when I used to free-lance I earned very good money, by my standards, and did very little with it other than having an Amex statement which was basically a Good Eating Guide. These days I'm gettin old, have a permie gig, and I chip in perhaps a total of around £50/mth to things like my Masto admin, some YouTube science channels, FOSS projects, and the occasional Kickstarter project. It brings me joy to be able to do that.