When I was inside my mom's womb, it was me, not herself inside. And because it was me, she had NO right to take life from me. And because a non born baby can' defend her/himself, as they can't speak, they need other mature adults from the outside to defend their rights.
Consider the possibility that NO ONE can take life from you. Life is from God and is eternal. What we are talking about here is human experience, human life, which is only a very limited and flawed manifestation of God's gift. Our mission, should we choose to accept it, is to live a human life with as much quality and progress as possible. One of the most important elements in that process is freedom. It may be that sometimes one person's freedom comes at the expense of another. That is what makes this human experience formidable, there are many conflicts, complex situations and difficult decisions. But, human life is not the "be all" and "end all". Every mating does not result in a conception, every conception does not result in a birth, every birth does not result in a complete life, every human life is not successful. There is more to life than we can possibly imagine in this human condition.