I have this thing about wasting food. I don't like to do it. I'm the person who takes home a doggy bag even though i don't have a dog.
I am a member of the clean plate club, even though most professional women i know order salad at a restaurant and then send half of it back to the kitchen. I used to think of this as wasting food.
Then i saw that all food is "wasted." It goes into our bodies and comes out as waste. The leftovers that don't go through our bodies are also waste--going directly to the compost or garbage disposal or landfill.
Anyway you cut it, food become waste. That's just the nature of it.