Not a crime, and victimless is not brought up as it is irrelevant.
If a person would die unless connected to your circulatory system you should not be forced to have them connected.
Your concept of not being a person till you pass a magic line doesn't make much sense. Which conjoined twin is a human, & which isn't. Simply declaring irrelevance isn't sufficient.
Birth is a very objective line. The issue of personhood is irrelevant because it changes nothing. Sure, call a fetus a person, but abortion is still fine.
