Atheists, the death penalty and abortion...

[pocaracas]

The discussion of whether the zygote/embryo is human or not is, in my view, pointless. It's an attempt at rationalizing the thing, but, as cafish is showing, leads only to a discussion where each side becomes ever more polarized and eventually one just gives up arguing.

Not quite... It's an attempt at rationalizing the killing of the thing.
Perhaps you'd like to explore the definition of parasite? At what point does a human-parasite stop being a parasite?

Isn't that evident?
When it can function by it self, without the need for a host.