Hmm, while doing some research for another project, I stumbled across this old article on jezebel.
Infertile women dont want to share their embryos but they can expect other women to share their children via adoption? And I use the term "share" very loosely.
"According to the Times, "53 percent did not want to donate their embryos to other couples, mostly because they did not want someone else bringing up their children, or did not want their own children to worry about encountering an unknown sibling someday." – IVF Patients To Other Infertile Females: Keep Your Paws Off Our Embryos
Very, um, curious.