It just ain't possible to explain some things. It's interesting to wonder on them and do some speculation...
"I appear to be lost." The demon checked around him, listening intently to thesounds of moans, cries of hungry children and weeping of those recently departed. he gave a smile. "Lovely." He continued his whistling. Someone bumped into him and muttered an apology before Erik grabbed his belt loop. "Excuse me, you have something of mine." The man profusely denied, then gave a yell as the doctor slid one of his hands into the right pocket, taking out his wallet. "Tsk tsk tsk. What would your mother think?" He placed it back in his own pocket before moving quickly, a flash of metal and soon Erik felt a spurt of blood hit his face.
"And dinner is served. yum." Grabbed the dying body he dragged it into a nearby alley, taking out a syringe and injecting a large dose of methamphetamine, the man dying quickly. "Drug ridden meat, it's wonderful." he sat down, a bag of medical tools appearing as he worked on the arm, carefully slicing away inedible parts and removing the muscle. "Wiry, mal-nutritioned, drank whenever possible and..." he gave it a lick. "Possibly detoxing from coke. Ah well." And took a large bite, ignoring the blood that was ruining his clothes.
...but the main thing is you have to accept it, take it for what it is, and get on with your growing.