We all have our preferences on what we want to spend our money on. Personally I enjoy some good desserts, so that is why I buy them, and other things off goldbely. Another reason I like to find high-end restaurants when I travel and pay extra $$ for high-quality food.
Some people like to buy extra supps, some people like to buy stuff for their cars, some people like to spend extra on high end coffee. It is all a personal preference thing.