I certainly agree with not mixing the blood. I for one would want nothing to do with the WITCHES and WARLOCKS described in those books. There is more that a little hint of canabalism there too, with the "adolescent" edible plants. But of course, historically cannibalism & witchcraft have often been associated (for ex. in Hansel & Gretle). Many of the practices described in Harry Potter books are similar to satanism. Yeal, they can call me a "muggle" or anything they want. I want nothing to do with such "creatures" who try to make those look subhuman who don't want to play their dark and dangerous games.