Abortion not allowed

[fr0d0]

No. There's a distinction to be made between human being and person.

You are defining a single cell as a human being.

Indeed. A fertilised egg which has begun the human life cycle.

Personhood draws in all sorts of other considerations, which is a deliberate attempt to muddy the discussion.

We are trying to clarify, not muddy.

Good.

That is: sentience, self awareness.

Those are the things that make one human.

Not according to a consensus of scientific opinion. Other animals can be sentient and self aware. Only a few aren't sentient. Oysters I believe feel no pain.

Conception is the beginning of the human life cycle. A human is created at that point.

I don't see how that is a human being. It is one cell.
You haven't justified your claim to anyone's satisfaction.

You don't see how it's a person. It isn't. You don't see how it's sentient or self aware. It isn't.

Did you know that between 11% and 22% of all pregnancies miscarry?

When a zygote splits, identical twins are created. Is each half a person?

Fraternal twins result when more than one egg is fertilized. Occasionally, those two zygotes fuse creating only one. Is it two people?

The fusion of two fertilized eggs results in a mosaic - a double set of DNA.

The fusion of two zygotes creates a chimera, a person with two sets of DNA - some cells with one set, the others with the other set.

I know very well that a percentage of pregnancies miscarry, yes.

Human life in progress from conception is still human life no matter what becomes of it.

The [person] category may exclude some human entities in prenatal development, and those with extreme mental impairment.

Personhood is up for a debate, and I'm not interested in it.

Putting that aside, we still have the problem that terminating pregnancy is always terminating a human life, as defined. The weight of the moral responsibility is greatly reduced from inflicting suffering to a sentient entity, but it is there nonetheless, and felt by the parents. Any feelings of that nature have to be dealt with, and we use ethics for that purpose.