I don't believe there's a supernatural being who sits around telling people to masturbate and abort babies. I do, however, believe that it's possible, maybe likely, maybe even certain, that there is a kind of antithesis to God. It seems to me that for every action, including those performed by the supreme being, there is an equal and opposite reaction that occurs sooner or later unless something intervenes to prevent it. The universe left to its own devices tends toward equilibrium. If that's correct, then everything that God does gives birth to a force that would undo it. This antithetical force isn't necessarily evil, though; just as a good pencil has an eraser, a good supreme being has an antithesis, and for largely the same reasons. And so my answer is: no, I don't renounce Satan but rather consider him a necessary part of the eternal drama.