See this beautiful pile of plastic containers, containing food? Yeah. It's not beautiful. They are all full of old, some moldy, leftovers that all went in the garbage can. I think I hoard plastic containers, just to hoard leftovers that I know I won't eat or have intentions of eating but don't.
My solution: Growing to "love" leftovers won't happen. Easiest for me for my likes/desires: Learning to prepare meals that don't have leftovers. Make smaller portions. If we're out of dinner and still hungry? Eat fruit. It can happen.