Mister and I are pretty good, we only do a big shop about once every two weeks with small top ups in between for things like produce, milk, and bread. We both enjoy cooking and like to plan out our meals. I was a bit weirded out about not keeping eggs, condiments, etc in the refridgerator. Eggs don't bother me anymore, but I insist on keeping mayo in the fridge. I know it probably has enough preservatives in it to keep it safe, but it still just weirds me out. 7
As for leftovers, I think I may be guilty of occasionally leaving pizza out and eating it the next day, but not any other kind of leftover food.