I hate sharing food. When I go out to a restaurant and order my meal, I order according to my hunger level. Then, once my food arrives, my brain instantly prepares my body to expect the amount of food that's placed in front of it. That amount cannot be diminished. It can always be added to, because I am a glutton, but the amount can never be reduced.
People try to make it okay with, "You can have some of mine." I don't want some of yours! I want all of mine! I would've ordered your shitty meal if that's what I wanted. You could've ordered what I got; last I checked, we all got the same fucking menus when we sat down at the table. All trades and splits, unless negotiated prior to ordering, are off limits. No! You can't have the crispy, burnt-cheese corner of my baked ziti that I've been specifically saving for the entire fucking meal so I can end on a good note in exchange for your pube-flavored steamed broccoli, asshole!