Because I can be. And hanging upside used to keep me calm, since the feeling of blood rushing to my head became the only thing I was focused on. Alas, I may look and be tied to my mortal body, I still lack the blood of a mortal, mine is thick and black, not necessary for keeping me alive, but simply required to have, since I can't get rid of it being only half demon. Now it's just more of an entertainment, or just to keep me from other beings. You can't be p*ssed as effectively when you aren't close enough to hit them, or that is just my mentality on the matter.