I think that would be the crux of the matter. It is a personal morality issue. One to be decided for one self.
I don't understand why prolifers are so intent on enforcing their personal morality on other people's lives.
And jefferson before you start about how a murderer or pedophile might say the same about their actions, then the difference is that a zygote ( or unborn, or pre-baby or whatever) has not been a part of that system of rules that govern inter-human relationships. A murderer violates those rules of interhuman relationships that makes us beings, who are conscious of our existence, feel able to interact with each other. Same thing for pedophiles etc etc. Those rules must be upheld or else humans would not be able to function as a society.

Am i getting across or am i just sounding cryptic??

Occasionally even i can't tell........