In regards to Romans 6, I'd just like to point out that it was written by (or at least attributed to) Paul, as was most of the New Testament, and that he never knew Jesus personally and, in my opinion, has no more authority than any other religious writer. I'd be inclined to argue that most of the Christianity that exists today is more Paulinism than anything else. Personally, I never respected anything that the man had to say. Regardless of that, you're still basing your philosophy on someone who has no more moral authority than you yourself do.