Why would anybody repent of their sin if everybody around them is making an excuse for it?
Just think about how many families at least said that they believed what the Bible says on an issue until it hits a little closer to home. I mean, the Bible all of sudden takes on a different meaning just because a member of the family decides they don't want to believe it? I don't think so.
God does not change. The way He felt about sin yesterday is the same way that He feels about it today and will feel about it tomorrow.