I have often replied, when confronted by religious zealots demanding
"What GOD has created should not be messed with!",
"So what you are saying is, a child's parents should not allow surgery,
correcting a cleft lip because GOD created the child that way."
In answering the question posed by the O.P., I reference my above statement,
in saying, "Yes, I would most definitely do all that I could to ensure that my child
would be born with the primary sexual characteristics with which they identify,
if such an INFALLIBLE procedure were available.