Nope, science.
I strongly disagree. That unique strand of DNA is the blueprints and building crew for a new human. All the mother does is supply the building material and the temporary building space. This is a scientific fact.
Humans go through many stages in life, being a fetus is just one of them.
As far as being viable. A one yea old can not survive on it’s own. Nor can a two or three year old. Not a good reason to kill someone.