"Life" is not the object of rights and duties under the United States Constitution. PERSONS are, and persons are human, born, and alive.
I always have to make this same distinction in every single abortion thread that pops up on this forum because all you goddamned sheep base your opinions on bumper-sticker slogans instead of actually thinking about the issue thoroughly and discussing it in the most rigorous terms.
If you want to argue that a fetus is a person, that's fine, and I have no problem extending personhood to any fetus at or beyond exo-uterine viability. The fact remains, however, that no person has an unqualified right to occupy the body of another person against that person's will. No person has the unqualified right to forcibly respirate and extract nutrients from another person's blood stream. No person has an unqualified right to forcibly inject another person with hormones and body waste. Each such instance represents a fundamental violation of a person's bodily integrity, and as such any person seeking to enjoy those rights needs to acquire an explicit waiver from the other party. These are well-established legal principles to which an abortion ban would run directly counter.
If a woman has the freedom to become pregnant of her own volition, then equally she has the freedom to become unpregnant of her own volition. As much as no one can force her to become pregnant against her will, no one can force her to remain pregnant against her will.
These are the facts. They are not going away, so you'd better get used to them.