Our rim rash is coming up to 4 years old. Hasn’t done any harm leaving it and we don’t notice it any more.
Like many car owners (and a view not shared by everyone), whilst it is not abused, it’s just a car and will pick some wear and tear over it’s life and don’t see the need to go fixing each one unless it’s going to cause problems.
For those on finance, or looking to sell, it’s probably best dealt with, if at all (3rd party may not be as negative about minor blemishes as you think), just prior to moving it on. I’m sure many will have had multiple scrapes so is going to be cheaper getting a job lot.