We can also assume that use will ultimately result in both stress and wear. That means there is a need for the organism to repair or replenish itself. It also means that something is likely to wear out or break inevitably. This is as much an irrefutable truth for machines as it is for you and me.
Just like you need to exercise and watch your diet to ensure the benefits of a long and productive life, so too will you need to take care of your vehicles if you want to experience the longest service life delivered at the lowest possible service cost.