You missed my point: People with the values system I described are acting rationally within the confines of that values system. In that system, zygotes are as human as you and I, and harming zygotes (et seq.) is infinitely worse than harming 14-year-olds. The moral calculus is that simple. I don't agree with it either, but I'm not going around insulting people's sincerely and deeply held moral beliefs. As a rhetorical strategy, that sucks. It won't convince anyone.
