Except that's not the universal framing.
There is one side that is fighting very hard to not only make it at conception, but potentially even before conception (there are reasons to believe that the supreme court might come for birth control next - and there are large portions of the same religious community that put them in power that want that).
For many people on the other side the fetus doesn't get rights until it is born. And up until that point, it is a bundle of cells wholly dependent on the mother, and therefor part of her body (and thus, her bodily autonomy). Indeed, there's a reading of the bible that supports this interpretation - it mentions multiple times a baby becoming alive "at its first breath".
For many people, the answer lies somewhere in the middle, but it's not clear at all that those people represent a majority.
The issue touches on strongly held moral beliefs on both sides - rights to life, right to bodily autonomy, and questions about when life starts.
There is no simple universal framing that we can all agree upon.
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And even aside from framing, even if we could agree on a framing, the issue gets really complex, really fast. Lets say we do agree that the question is about when a life becomes a life.
Pregnancy is dangerous, as I well know. My wife and I lost three pregnancies. One of them was at 20 weeks. My son was already dead by the time we got to the hospital, but they had to remove his body from my wife's body or it risked a deadly infection. The medication they used to do that, in this case to trigger labor, was an abortion medication. The procedure they would have performed had that failed, was a DNC - an abortion. Both are already being banned by trigger laws in many states. In a room down the hall, a dear friend of ours who'd been struggling with infertility and loss was having a DNC the same day we lost our son, due to yet another failed pregnancy. Again, without that procedure, she would have died.
So you very quickly get into other complexities even when you do boil it down into a question of when life starts. And even then, the argument for banning it the way many states are (completely, with no exceptions) becomes hard to make about anything but control.
You can say it's about saving the life of the child - but we don't force dead people to donate their organs even when it would save a life. These laws will force women to die, even when there is no living child left to save.