The definitions of audiophile I have heard and lived with for the last fifty years always include a very strong thread of obsession… always willing to… well in my case buy discount brands of paper towels, tp, buy an old cheap car (my used 1969 Datsun 1200, in which I rebuilt the engine, got me around for over 15 years, this’ll avoiding popularity with all but the most desperate woman), while I took out my first loan on a Threshold s500 amp ($5K, $19K in todays dollars). An audiophiles system always cost more than their car. This has always been true for me.
My partner always comments that the ratio between audio dollars and normal dollars is about 100 to 1. I will really try to find a way to avoid spending $20 but a $2K on a new cable gets an instant and easy yes.
Audiophilia is generally considered a disease by those with it as well as those around them… while somewhat jokingly… with a lot of truth.
There are also hi-fi enthusiasts and a couple other classifications where consideration is put into how much better does it sound… and is it worth it. Typically “is it worth it?” Is only heard from enthusiasts, or in private intimate discussions between two audiophiles… fully knowing no one else would even hear the minute difference being discussed.