I think that people are far more likely to end up depraved and corrupted by the tripe that they hear/sing in religious hymns and brainlessly-chanted prayers. But we tend to give all that a bye. I like the folk process and I enjoy different takes on songs. But I don't regard sanitisation of words that someone thinks might offend me as part of that process. Number one, I'm a grown up, number two, I don't like being patronised, and number three, I have no right to not be offended. I want to hear what the song was intended to be, otherwise I just might not want to hear it at all. I'm not going to turn into a rabid racist because I hear the wonderful Paul Robeson singing "coon" in a song.