Earlier quoted context omitted.
> unique living human organisms are different enough from the unique living human organisms that matter that it should be morally acceptable to kill them I think what we should care about isn’t human life, but human consciousness. A person in a vegetative state doesn’t suffer when you pull the plug. The difference matters and is unmistakable between large organisms which have gone through a long process of developmen…
What about someone who is unconscious but will recover? Is it ok the pull the plug on that person? There won't be any suffering (unless friends or relatives mourn, but let's assume this person has no friends or relatives). Regarding the size of the organism, and amount of time spent developing, what about a very early preemie who is unconscious but will recover?
In the second case there’s no reason at all to do something so drastic. Abortion is acceptable only because the mother’s body is being used and damaged, and she should have the right to prevent that use. The preemie doesn’t need to damage someone’s body to exist.
Edit: having read some of your other comments, I have a question for you. Why should we care about a zygote and not a sperm and an egg. Why is the act of fertilization the line between simple reproductive cells and a beautiful human life. Both have the potential to make a person, both are genetically human, both likely cannot experience things in a human-like way.