You are getting confused because women make choices about a medical condition known as “pregnancy.” This is understandable because you were likely raised in a religious household that believes in spirits and souls, so you confuse a non-sentient, non CNS-having fetus with a born citizen deserving of rights. A woman makes the sole decision about the medical condition affecting her womb the same way that a make makes the sole decision about medical conditions facing his testicles. It’s not sexism, it’s not unfair, it’s not immoral. It’s biology.