Was someone on a high horse and I missed it? Damn.
I think the point here is exactly what BroadwayGirl said -- it's about the message of the play, not the content. There is no redemption without sin. We must represent sin on stage if there is to be anything to redeem. As long as that redemption happens, I'm fine. Sometimes it happens in small ways, and other times in big.
To me, the question isn't "Can I do this play and be okay", but "is this play worth doing"...if it isn't clear to me the power of the show, why do it? The actors that I know that are the happiest are those who are interested in telling stories of redemption and hope more than professional achievement.
"Fundamentalism means never having to say 'I'm wrong.'"
-- unknown