The impression I have about this is that it is not so much about actively selecting a deaf embryo as being forced (under the terms of the proposed Human Fertilisation & Embryology bill) to reject deaf embryos in favour of hearing ones. I can understand why deaf parents would find this unsettling. As parents, on the whole we want our children to be like us, so I can appreciate their desire for a child who can share their language and culture. On the other hand, surely there is no reason why a hearing child of deaf parents cannot learn sign language and be integrated in the deaf community, however, a pecking order does exist; perhaps the parents feel a hearing child would be 'less' accepted? This is something that the deaf community needs to deal with.
Is a hearing child of deaf parents at any greater disadvantage than a deaf child of hearing parents? I am the hearing parent of a profoundly deaf child who has a cochlear implant. Having a deaf child was something which had never crossed my mind and was certainly a shock, but we've come to terms with it, have learned sign language, made some very difficult choices on behalf of our child and are now contemplating mainstream schooling for her. It's been a huge learning curve, bt dd is happy, bright, has lots of friends and is very communicative. Her life would undoubtedly be easier if she were hearing (as opposed to having digitalised sound provided by the implant), but I couldn't say for sure that she would be the same child if she could hear. Like yurt1, if I could go back and be presented with the choice of dd or another unknown child (potentially with a different disability - after all, we can't screen for everything), I'd choose dd without a second thought, even though I know her life will be more challenging than the average child's.
My big concern about this whole thing is that it may represent the start of the slippery slope; if in the future deafness can be identified before birth via a screening test, does this then become an acceptable reason for terminating a pregnancy? I feel strongly that these parents should be allowed to take their chances with a future child and live with the consequences. As I understand it, if they conceived a child naturally they would not be unhappy if it was hearing; they simply don't want to be forced to reject a deaf child.