as someone who fishes the Atlantic twice a year, the wisest advice I ever got was to replace your line every year or two, especially if its left in an unconditioned room or in the sun.
This is commercial gear, though it’s a great idea to keep recreational gear in good shape. It’s a huge shame to lose tens of meters of line attached to a fish which will then be eaten by a predator, and so on. A lot of needless waste and suffering.
