I must admit that there are some aspects of the BDSM lifestyle that I do not think agree with my faith, but those I just do not use.
My faith talks about submission, as anyone who reads the Bible knows, but it also talks about love. Although the BDSM world asks for submission, I, at least, give love fully and completely. In talking about this I realize that I have an unusual way to reconcile my faith and my lifestyle, but it does work for me, so I am sure others can do the same thing.
But why do so many people in the lifestyle have a strong faith, perhaps because faith offfers some of the same benifits of the lifestyle. After all, my faith expects me to submit entirely to Jehovah, and I expect my sub to do the same to me. Think about it, not so far apart, are they?