Habits Die Hard

This habit started at camp....I still skip the trays...why? I don't have to wash them, the hospital's cafe has industrialized sinks and power washers. It would be easier than stacking my food up in my hands. I could spread out my lunch where I sit...either it's a habit that will be hard to die or somewhere back in my subconscious I can't bring my self to take a tray, cause someone has to wash it.....