Isn't the biggest bed mine????

I just don't understand it, humans...why do my masters get sooo upset with me when I lay on their feet/legs/face at night. They have the biggest bed in the house, you would think that they would share with me! I work so hard throughout the day keeping all the couches warm for them. They just don't understand how difficult it is to be me. I'm amazing, I purr for the kids, I eat whatever they feed me (well, for the most part), I put up with them shaving me. What more could they ask for. Does anyone have these types of issues with their masters?