Why do they keep doing these things

Why do people keep doing these ridiculous things.  I understand that when people order their food and they are paying for it, that they want to take it home.  When there is just a couple of pieces of pasta or something small its not worth taking you think.  WRONG!  I had a family today ask me to pack up two pieces of ziti.  I think they just do that stuff to make out lives more difficult.