Any convert, whether he goes from communist to capitalist or from six packs a day to smoke-free, ends up condemning his former practices. Because those beliefs didn't work for him, they can't work for anybody. His vision becomes narrow, blinded by the light. Whether he's transformed into a Hindu or joins A.A., he becomes a fanatic.
If you ask me, it's the fanatics who fuck up the world. It's the fanatics who think they've got god on their side. The rest of us? We don't need divine light. In the dark of night all we want is enough light so that we don't stub our toe on the way to the toilet.