> Is abortion a right that anyone should have? Bluntly, is it murder, or not? If it's murder, then it's not a right that anyone should have, whether or not that inconveniences the mother.
You're oversimplifying the argument, because not every case of killing another human being is considered murder. "Murder" is a legal construct. The right to kill another human being does exist in certain circumstances, such as in self defense, warfare or capital punishment, but the right to commit "murder" does not. The US has an entire Constitutional amendment to protect the right of people to kill other people "in defense of a free state."
Even if one does concede that a zygote at the moment of conception is fully equal to human being, it still doesn't follow that abortion is murder. Especially not when the health of the mother is threatened (which would arguably make abortion in that case a matter of self defense.)
And it's honestly weird to me that shooting a person will be defended to the ends of the earth by Americans as sacrosanct, while in numerous states it's now a crime to even search the web for a morning after pill, and women are forced to carry even stillborn fetuses to term. Let's not pretend there is even an objective definition of "human" in regards to American jurisprudence, there never has been.
As to whether someone should have that right, it exists whether anyone wants it to or not. The question at hand is whether government should be allowed to abridge that right, or made to respect it. I believe there is no argument that the government should be allowed to abridge the right to abortion if the test is strict constitutional originalism, and the intent of the founders relative to their culture. When the Constitution was ratified, abortion was seen as a personal choice, shameful in the way that everything related to women was shameful, but not illegal. Rightly a matter left to the people.