In the abortion example, the fetus 1) is created already attached and ending ongoing life support may not be the same as requiring that someone who is not providing it provide it, 2) needs life support for an extended period, and 3) can only use the life support of one person.
In the abortion example, the fetus 1) is created already attached and ending ongoing life support may not be the same as requiring that someone who is not providing it provide it, 2) needs life support for an extended period, and 3) can only use the life support of one person.