What else is it if not a human life. It is human and it is life. I hold this belief because it is true.
And it is not a
person.
I'm late to the discussion but I think I can clear some things up.
In the end abortion is not a thing that can be decided rationally, it is value call.
But there are a lot of irrational arguments used (mostly, but not exclusively, by the anti abortion side) which can be agreed upon by rational interlocutors.
The moniker "pro life" is the first irrational thing. It is an attempt at spinning the narrative. And for many "pro lifers" it is false advertising. I'm more pro life than them.
The next thing is to call an embryo or sometimes even a zygote a "baby". Trying to use emotional terms to steer away from a rational discussion.
Not wrong but still misleading is the argument "it is human and it is alive". True, but not a person and therefore not a rational argument for a "right to life".
One argument that hasn't been brought up in this thread is the reason I advocate a 20 week limit for abortions: suffering. It is one of the pillars of my and many others moral primitives. Promoting well being and reducing suffering is what most people can agree upon as a moral goal. On that basis we even agree to grant rights to non humans. Cruelty to animals is a crime in many countries.
Before the 20th week of pregnancy there is no nervous system and no brain that can register pain. Ending a pregnancy at that time there is no violation of the moral imperative, no conflict of interests.
It also happens to be the middle of a normal pregnancy and it happens to be at a time where a pregnant person had enough time to know that they are pregnant and arrange for an abortion. I think it is a valid argument for infringing on the right of bodily autonomy.
That is all for "normal" pregnancies and there have to be exceptions for special cases, especially when life or health of the expecting mother are in danger.
Do you think we can have a rational debate on these premises?