I never made the claim that a human has to say it's a human. All my claim is is that it's not objective to pinpoint a specific time when it's a person or not, it's your subjective opinion. At every day of the pregnancy, there is a probability that the zygote, embryo or whatever will not be born. And most of the time, the reasoning for this is not abortion, miscarriage happens often. And your dismissive point adding "uninterrupted" is illogical because it implies that interruptions in a process are Unnatural. People can do everything right and then have a miscarriage, people can do everything wrong and have a perfectly normal baby. But by your logic, if someone has a miscarriage, then they are responsible for the death of a human because it's a human baby from the moment of conception, which is your subjective belief. 

You can say a baby is objectively human. It doesn't live inside of another organism, it eats and drinks through its mouth, it's consciousness consciousness can be measured and tracked, etc. If you don't think a baby's humanity is different than that of an unborn one and you think that that belief is objective, then how is a sperm or an egg not an unborn baby even before they meet?