I don't see how many of the things you're describing as people can possibly meet that definition.An individual, functioning life form.
For example, what defines an individual? Does an individual need to have its own distinct DNA? Because if so, a zygote isn't an individual.
Furthermore, what defines a life form as "functioning?" Does a functioning life form need to be able to maintain homeostasis? A fetus can't do that on its own until quite late in pregnancy. The amount of medical attention needed to keep babies born a couple of months early alive is very aggressive and wasn't possible until quite recently. Even healthy babies can't do some things until a little while after they are born, for example they need to be kept warm until their bodies adapt to regulating their own temperature.
None of this is to suggest that a newborn baby, even a premature one, isn't a living organism or isn't a person. Only that this is a silly definition that ignores the realities of how humans are created. In fact, how multicellular life itself works.
That single celled zygote isn't a person, it's a cell. There are trillions of cells in a human body, and our ability to exist as living things relies on the cumulative action of those cells. The cells themselves are not us, they are created, live and die without us even noticing. Hundreds of millions of them are shed from our skin each hour. The life of a multicellular organism is an emergent property of the action of countless cells. Those cells are not capable of intelligence, but when countless billions of them form a structure that structure can become capable of intelligence.
That is why there will never be a clear line when a human life begins, because a human life is a function of complexity, not a function of cellular metabolism. That is why your definition of life is reductive, nihilistic and nonsensical, because it fails to understand that humans are not cells. The cells that make us up may be "functioning" but they are not individuals. We as individuals are complex structures made of cells, and a human is not a functioning life form until that structure forms.
To clarify, this is the basis of my moral and political opinions on the subject. There are certainly other ways of understanding the pretty complex questions of when human life begins, I just find this one to be the most robust.
Look at the title of the thread, and consider the context. There are very good reasons for people to believe that these are not moral opinions but political opinions, and if you think that is an inaccurate view of your argument here you might get better results by clearly distinguishing your political opinions from your moral opinions.I'm largely not expressing moral opinions here. If you look at the thread, you might notice which users are attempting to shame people with comments of how barbaric they are.
I of all people understand that's not always possible, and certainly not always easy, but if it is impossible it's because those moral opinions are also political, and you should probably own that instead of complaining about being misjudged.
I want you to stop moving the goalposts and address the problems with your argument. I don't really care what the outcome of that is.Soooooo you want me to be a different person?
You've misunderstood the example I gave. It was not an example of how I "want" you to change, it was an example of how you could keep the same argument (how you could not change) while also reconciling the problems and contradictions. If you have an alternative or something better, I'm interested to hear it. But you can't keep claiming the high ground of being reasonable while making the same weak argument over and over again and moving the goalposts by using different language. That is frustrating and makes it appear that you aren't being honest.
For what it's worth, I apologize for calling you a liar. I don't think you are intentionally being dishonest, but I would think deeply about whether this is an argument you actually want to have, or whether you're simply trying to defend intractable and deeply held beliefs which you're not actually willing to give serious thought to. This isn't a particularly fun topic, but it seems like you're finding it particularly unenjoyable, especially for someone who isn't directly affected by it.
We can, however, maintain homeostasis on our own, and if we can't do that it's because we're dying.You can't survive without the nourishment provided by other organisms. I've painted myself into the biological definition of life. What a horrible corner to be in.
That is important because it's not only one of the most common definitions of life, but also because it's the mechanism by which the vast majority of abortions actually work.