Unless?
That's what I've been saying all along, perhaps not as clearly and succinctly as I thought.
In that case, is there a morally relevant difference between killing a human and stepping on an ant?
Notice the pattern of his reaction.. throw a Kantian curve ball at him and he disappears. This guy is full of shit.
Dear boy, you know absolutely nothing about ethics (which accounts for your inability to offer a logically sound argument in favor of your position), a fact that you illustrate with idiotic references to Kant and the categorical imperative. Considering Kant's proclamation that
"[o]nly a rational being has the power to act in accordance with his ideas of laws-that is, in accordance with principles-and only so has he a will," it should be rather obvious to those familiar with Kant that a fetus is not a "rational being" through the guidelines that Kant established. Of course, all you did was go to Wikipedia and look up "utilitarianism," so you gathered some dimwitted comprehension that Kantianism and deontology was opposed to utilitarianism, but were not informed enough to understand the nature of Kantianism.
And this simply illustrates that you know nothing of ethics, least of all utilitarianism, as was seen from your imbecilic flailing and comical attempts to attack felicific calculus with the example of the Holocaust victim being slapped. In regards to Kantianism, I doubt that you could even explain the difference between a means and a mere means.