I temporarily live in an American family, and they leave the plates full of food in the sink, while I'm used to throwing the food out, filling the plate with water and letting it sit right after I'm done eating. I prefer to do it that way because no food crusts on the plates and its easier to clean later.
After you finish a meal and place the plate in the sink, is it common for you to leave the food on the plate?
If yes, what's the reason you prefer to do so?