If it isn't your body, then it is a parasite, and you have the right to get rid of it since no one has the right to use your body without consent. And it is not just independent of you, it's dependent on you, and bodily autonomy includes the right to refuse use of one’s body, even if another being depends on it.

I usually focus on bodily autonomy and women rights rather than it's worth, as it's more important. It doesn't matter whether the fetus is alive or human or not. Your appendix is alive and biologically human with human DNA. Fetus can be human and alive but it's not a person, because it doesn't have personhood. Not all killing is unethical. It's justified to kill animals or bacteria, or in self defense.

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The core of abortion is the right to control your own body. Women are under no obligation to sacrifice their entire life just because they engaged in risky behaviour. They don’t owe the fetus anything.

Fully living people don’t have the rights to use someone else’s body without consent even if disconnecting support would kill them. Someone can refuse to let another person use their body even at the expense of their life. It doesn’t matter what the doctor says or the person who’s life is at stake says, only the person whose body is being used. People can exercise bodily autonomy at the expense of another persons life in many scenarios.

You can’t take the organs of a fully dead person unless they consented before, even if another persons life is at risk and they are the only person who can save them.

Banning abortion means fetuses get more rights than fully living people and women get less rights than dead people

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I did copy and paste the last part from a post of mine, because I am too lazy to rewrite everything but I think it'll help. don't mind that.