It has been in the news lately about the debate surround a deaf couple’s want to make sure there ivf baby is also deaf so that it can share in their own culture and experiences. This is wrong, and so is all human choice in conception.
We have no right whatsoever to chose the sex, eye colour, potential IQ or any other feature of a child. The beauty of the human race is its difference and diversity, this form of interference allows parents to exercise to much control over there not even born yet child. Having a baby is a risk, they might love art and you wanted a scientist, well tough luck.
This is a slippery slope to designer babies, eugenics and the attempt to create a flawless society. In this case it is wrong to deliberately engineer a disability in a child, and in the wider sense you have no right to choose anyways.
Sorry this is short and not more eloquent but my opinions are concise on this, when you attempt to conceive a child you take must accept what you create, be it blond brunette, boy girl, deaf blind or any other variation.