Ok, so they don't LOOK human, and they don't have the same capacity as adult humans. So, should we be able to kill the mentally and physically handicapped if they're ugly? Zygote, blastocyst, and fetus are stages of human development, not seperate species apart from the human race. They differ from me no more significantly than does a black man, an elderly woman, or an Asian baby. To imply anything else is to be guilty of dehumanizing for the purpose of pushing an extermination agenda against the unborn for your own personal gain.
Killing the unborn might be barely less evil than killing the born, or it might be the same thing. Either way, I cannot tolerate it being done for less than critically neccessary reasons. The personal preference of the parents does not qualify in this regard. The personal safety of the mother does. (And AGAIN, since some slavering idiot is bound to bring it up like it's relevant (2.8% of abortions involve rape or incest according to pro-abortion sources), I consider rape to be a special case in which the mother's personal preference should hold sway, and it's a choice I think she should make AFTER getting some therapy, since who knows how she'll feel ten years later when she 'realizes' she 'used murder to erase rape'?)
Be careful where you base your arguments, and think about the logical extrapolations of them. Appearance-based discrimination against any demographic is vile, levelling it against the unborn, who cannot even cry out on their own behalf, is unspeakably vile and evil.