As opposed to this, I would rather adopt at that point.
I am not so concerned about leaving a DNA trace of my existence as others seem to be.
Sometimes people don’t know until a child is conceived that there’s a problem. The issue is larger than just this ‘3 person parentage’ business. Even if one objects to that, there are lots of questions still to be answered; and the arguments here seem to boil down to ‘Don’t fool with what God has done’ - even though we do so all the time in many different ways, and have for a long time.
As gene therapy progresses, more and more diseases that can be identified in utero will possibly be capable of being resolved; as well as problems after birth that can be helped with gene therapy.
It’s a very big topic, and I don’t believe it can be ethically answered in all of its aspects by Religious Fundamentalist rigidity.