I fully subscribe to the 80/20 principle for most of life. But trying to apply this to all of life will eliminate utterly irrational joys that many of us feel about the odd “perfect” thing in their life.
I’ve learned never to discount how much happiness (often over decades) that some otherwise mundane, but often outrageously expensive, items can give people, often each time they use it.
For me, it’s wallets. I could get a wallet at literally 1/10th the price of what I paid. But my current one has provided 15 years of quiet (irrational) satisfaction every time I pull it out.