Got a link? I haven't heard about this before.
I agree with the OP. In my opionion, Christians should be concerning themselves with things that Christ would actually care about such as povety at home and abroad, the inhumane treatment of prisoners and refugees, the greed of corporations, the impious nature of their religious leaders, and innumerable other issues that actually cause harm to humanity. Who a small minority of people whom they probably don't even know chose to share their feelings of love with should the last thing on their to-do list.
I think it was in Scientific American or
New Scientists but a quite look around the web brought up this article on the BBC abut the
production of sperm from human stem cells. We are also able to generate stem cells from
human skin to provide a source of stem cells which doesn't require collecting them from embryo's. In regards to the growing of sperm from stem cells it appear that the their use usually comes with developmental problems which need to be ironed out before human trials.
As I understand it sperm are a more viable product of such techniques that eggs because the mitochondria carried by sperm are tagged for destruction during development and generally only the mothers are inhereted by the child. Eggs are made in their millions during the early stages of development, the vast majority of these fail leaving a small number behind and their mitochondria apparantly go into hibernation with ATP being supplied by surrounding cells to keep the egg alive. The purpose of this is to ensure that only young healthy mitochondria are passed onto the child which is probably why Dolly the sheep had so many problems because the mitochondia she received were 5 years old and so by the age of 6 they were 11 years old and so were functioning poorely with the associated problems that come with poor mitochondrial function.
There is also a method of reproductive therapy whereby healthy mitochondria from one womens eggs are injected into the eggs of a women whose eggs contain rubbish mitochondria which has been succesful in increasing fertility. I believe this technique has been banned although I don't beleive that any of the chidren have suffered any ill-effects.
With all this in mind it makes sense to focus on making viable sperm rather than viable eggs from stem cells.