Upgrading everything is a treadmill with a price tag. “Enough” is the only model that doesn’t release a newer version.

Improvement has no upper bound, which is what makes it such an effective way to spend money indefinitely. Every product exists in a slightly better version, and that version will itself be superseded, so a policy of always upgrading is a commitment with no end date. Deciding what counts as enough is the only way off, and nobody else will make that decision for you.

Pick one category and set the line. This phone until it stops working, these shoes until they wear out. Write it down, because the line only holds if you drew it in advance.