So do you include the future and the past? If you include the future it is extremely difficult, if not impossible, to determine the universality of a principle. If you don't include the future, that means that it is possible for the universality of a principle to change. Then As soon as one person is born who doesn't share a principle, the moral character of that principle vanishes?
I'm not what point you are trying to make by bringing in the concept of the perfect circle. I don't see at all how this relates to morality. The concept of a perfect circle is not universally shared currently, and certainly isn't historically shared universally. Even if that concept were universal, it would not make imperfect circles immoral.
Yes. I think the point of confusion is around "universality". I'm not talking about a unanimous agreement on preference between people born and unborn, I'm talking about attributes that define kindness (the set theory kind, not the Disney princess kind). I was hoping to make that clear with the perfect circle bit, but I wasn't aware of contention on the issue... pretend I said square, I'm pretty sure that is a safe universal definition. I have no opinion on the morality of geometry, but all squares share universal attributes. All humans share universal attributes as well, by way of biological imperatives - life is preferable to death, all things being equal and outside of coercion.
I think that covers mental illness, war, dying in a fire while rescuing kittens, emo cutting, etc.
If you could stop the pain without dying, would you still kill yourself?
If you could escape depression without dying, would you still kill yourself?
If you could find meaning in your existence without dying, would you still kill yourself?
If you could go to heaven (or whatever magic place you believe is better than your present situation) without dying, would you still kill yourself?
If you could kill yourself without dying, would you still kill yourself? (Weird I know, but for the sake of completeness)
Did I miss any good reasons to kill yourself?
Or is your 'universal attribute' some sort of 'ideal' that doesn't actually ever happen and thus is completely useless for defining the set of 'human' and 'not human', let alone 'moral' and 'immoral'.
If I want to kill all other people and I successfully kill everyone but myself, my preference has become universal but fulfilling that preference has not become any more moral.
Personally, I don't think morality is all that subjective, but more an emergent property of community identity. (Thus is inherently shared rather than inherently personal). I would way that Morality is, fortunately, relative.