Tell ya what: When Dobson and his minions can line up adoptive parents for every single unwanted embryo in America, whether in a fertility clinic or a womb, then, maybe, we can talk about banning stem cell research and some abortions. However, the sad, harsh fact remains that there are always going to be more embryos than there are people who want them, and I see nothing wrong with putting the ones in fertility clinics to good use - if the Dobgoblins want to "rescue" some of them via adoption, good for them, but that doesn't magically invalidate either the enormous research value or the unwantedness of the un-adopted embryos.
And as I think about it some more, please, let them start with the fertility clinic embryos, which are not inside a woman's body and therefore not disrupting anyone's life or future. Get caught up on those, then work their way through the women who don't mind carrying a baby to term but balk at taking care of it for whatever reason (like, say, because those very same anti-abortion crusaders have no interest in any kind of government assistance or support to indigent mothers). Once they've got those unwanted embryos taken care of, then they can work on pioneering non-fatal embryo/fetus extraction techniques to replace abortions for women who don't want to be pregnant (age, health, rape/incest, etc.). No-one has to keep a baby or a pregnancy they don't want, no unborn babies die - everybody wins!
So what are y'all pro-lifers waiting for? You should be getting right on that! What's that? You say you don't want to go through another pregnancy? You can't afford to take care of another baby? How interesting...
Update: With a nod to Otter, the fundies should worry about adopting unwanted born children before they start freaking out over the unborn ones.