Airplane lifespans are determined by pressurization/depressurization cycles (i.e. number of flight trips), not distance flown or interior wear and tear.
Yep, I mean I know it’s nothing to do with the interior. But this didn’t seem like a plane that was being taken care of; it felt like one they intended to scrap the next week, so there was no point putting the work in any more. I was honestly kind of shocked; hadn’t been on a plane like it since Ryanair modernised their fleet.