We DO NOT throw away leftovers at out house, except for the occasional 'science experiment'. In fact we love them! Most times we will eat 'as is' the next day, or freeze them for a future meal. Sometimes I'll alter them into another recipe and on occasion will freeze for soups or casseroles.
My BIL, on the other hand, hates leftovers and will plan his meals down to the ounce, which makes it kind of tough for second servings if you are unfortunate enough to be eating there. He was bragging to me one day that he gets 8 hamburger patties out of a pound of meat