Have you ever thought, "Oh, well, I'm hungry but it's not dinnertime or lunchtime. Might as well go to the convenience store nearby and grab some Cheetos or Taki's to satisfy my hunger temporarily.". Then, as you get into the car and start eating your snack, you put your hand on your wheel, which could possibly be white, and by the time you get home, it's orange. However, it shouldn't be your fault that the dust from the Cheetos, for example, ruined your wheel. For instance, if you spilled a Coke from McDonalds all over you, Coca-Cola isn't responsible, McDonalds likely isn't responsible, but you are. However, as grabbing your chips to put them in your mouth and eat are a requirement to make the food into your mouth, thus digesting it. Then, your fingers get all dusty. But is it really your responsibility to have a napkin nearby when you buy their chips? It gets all over the wheel and all over your fancy new suit you just bought, and then you get all upset, and then you try to do something to fix it and it possibly gets ugly. You lose a nice $500 suit, you have to replace the wheel / clean the wheel in your car, and you're all kinds of angry and upset.