There was a good piece in the Telegraph today about the modern decline of the family and how it links into politics and so on. For me, the scary statistic was that half of all cohabiting couples split up before their child's first birthday. (I don't know if that just applies to first children or not...)
I guess therefore that part of what it means to be a witness to the transformation that Christ brings is being a culture where husbands stay with their wives and vice versa and where children are brought up in the best possible environment, even if it is more expensive. And of course, seeking to transform society in a loving way so that the best possible support is provided for children while being loving and supportive to those in situations where that is not possible.