Can I just add another example into the mix of this discussion which might be a bit closer to home for some. DH is adopted and has always known that to be the case for as long as he can remember. I guess you never know what curveballs life is going to throw but for us ours is that we now need to embark on PGD and are required to undergo genetic counselling, DNA testing etc. Imagine if he had not known his circumstances and found out via this process. The results of this testing may lead to us needing either egg or sperm donation and we will deal with that as we face it but I can’t imagine dh also having to learn that information at the same time.