I'm not an unbiased commentator, because one of our kids tried IVF unsuccessfully. I can't say much about details, maybe they will write about it themselves someday, but after the first unsuccessful IVF, they conceived naturally, and we have what we tend to think is a miracle grandchild--we also have 10 other grandchildren (we have five kids), and I suppose all of us are miracles in many ways, it just depends how you define miracle.
Here are some thoughts which may be useful. I think most churches have no formal, written policy on IVF, and most Christians have at best only a vague idea about what is their church policy. I start with this assertion since I'm almost sure at least someone will take exception to it, and hopefully you'll get more comments. I think this is the reason you have received few comments to date; it will take people time to reflect. It is a difficult personal decision, not just individually, since hopefully and probably both partners in a marriage should agree. From my viewpoint, IVF for a single woman is an even greater ethical and social can of worms, and same-sex partners go beyond that.
It would take some time for me to confirm and articulate our church's position on IVF, but I did get into it some time ago and can say confidently they are not at all thrilled. For my personal part, I am strongly, although not absolutely, influenced by church policy, and I believe God gave us minds, imagination, and consciences, as well as the Holy Spirit, to help us understand and form our response to His Word, Revelation, and Will. I think I would not personally have chosen IVF, but if my wife had asked I would have consented.
It may be useful to add the thought that I personally disagree strongly, in most instances, when churches (any religions) initiate legal action intended to force compliance with church policies. It is great irony that God gave us freedom, but so often some church leaders would take it away. It seems to me to be outrageous hypocrisy when churches soft-pedal controversial issues internally, so as not to lose membership, yet quietly organize lobbying and other political activies.
It is good for us to remember, and abhor, and not repeat, our not-so-distant-past of church-inspired black clothing; prohibitions against dancing, singing, alcohol; and abuse by drowning, tar-and-feathering, hanging, hanging-drawing-and-quartering, burning at the stake. We must remember that power corrupts, perhaps especially in the church. We have much to repent, and would do well to recognize that no one of us is likely to be perfect on this earth.
I absolutely believe that over the long haul Christianity has greatly encouraged and improved civilization. I think unity of Christians, and persuasion--but not forcing--of Christian values is our only hope to survive the Enemy's aggressive pursuit of Universalism, and the enslavement and abuse I fear it would inevitably bring. Remember God's creation of languages and nations in opposition to Babel.
On one last issue, please take note of our CS Lewis group at Cb (in the category of fan clubs). I invite your comments--and any concerns or issues--especially as to what extent his writings are reflected in your curriculum. We hope you will join us.