Perhaps you should spread your ogre catching net a little wider than Christianity and Islam. I quote from an excellent web page:
In 1898 William James Laidlay wrote a book criticizing the Royal Academy of Arts in London, and he included -
'It is the game of life we are playing; and if men, by their professions, lead other men into disaster, I maintain it is a serious thing. Some men, in fact, I think, most men, do it with no malice at all; in fact, far from it, it is more like stupidity; still, the result is the same'.
In other words, never attribute to malice (or religion) that which is adequately explained by stupidity.