There are some nice perks to good credit outside of interest. It can qualify you for better housing, better perks on certain rentals, not having to worry about emergency situations killing your savings outright, and let’s you take advantage of stuff like cash back and bulk purchasing discounts. An example is staple foods, being able to hit the once-a-year bulk deals on stuff like rice or Lawreys garlic salt can cut the price of those items in half or better (personal examples, but the thought should hold). Ancillary perks, but they do add up.