What a great question!!! So this is definitely an ethical issue. What if doctors and engineers could perform genetic therapy on your baby while it was still in the womb, and cure that baby of some genetic disease that It was going to be born with otherwise? Wouldn’t this be a wonderful thing for the baby? But what if people went too far, and started genetically modifying their babies to have blue eyes, or even a certain blood type so that the baby could later be a blood donor for another child in the family with cancer or a bad disease? (This has actually happened, and is very controversial).
The problem is not that the Technology is bad in itself, but that we have to be able to draw an ethical line somewhere.
I don’t think it’s right to genetically engineer a human life. In my view all people are important and deserve to have a chance in life. No-one has the right to decide whether a child has a chance or not.
There are arguments for genetically modifying out possible defects in human births, for example it may be possible in the future to engineer out a deformity that could cause someone problems throughout their life. I understand that disabilities are a big problem for the people who live with them, and can make someone’s quality of life very poor, but to not even give someone a chance seems almost barbaric.