Speaking for myself, I totally appreciate the fact SR IS available to people of any faith or none. It is extremely clear in the way the forums are titled, so you can go right to where you might feel most comfortable. Also, you may want to step up your research into non-theist recovery methods and philosophies - you'll find there are heaps out there.
As the previous poster said wisely (paraphrasing here): a big part of recovery from alcohol / drug addiction is practising acceptance of others and ourselves.