Earlier quoted context omitted.
What are those expensive hobbies and luxuries? My hobbies cost about zero (making music, doing the occasional woodworking, reading, walking). Travel can be expensive but it can also be quite cheap and is very dispensable. Luxuries outside of travel (expensive hotels), I don't even know what they are. I'm sure it's not hard to spend as much money as you want on many different things; but you make it sound as if it was…
Having kids, while not a hobby, can certainly be expensive, and is probably the most obvious missing consideration here. It also makes a lot of other things less flexible, which tends to cost more money. (Want to go to a movie at night? Now there's a babysitter involved). Kids aside, lots of things cost money. You like eating at nice restaurants? Money. Prefer to home cook nice meals? Great, equipment costs, therefor…
If one has money then spending it is good, of course. The question is, what are we willing to give up to get more money, and for what. I would argue time is infinitely more precious than money, above a threshold -- but the threshold is very low.