Are you allowed to use moral questions as litmus tests for rationality? Paper clippers are rational too.

It isn't inconceivable that a human might just value babies intrinsically (rather than because they possess an amount of intellect, emotion, and growth potential).

If anyone here has been reading this and trying to use more abstract values to try to justify why one should not to harm babies, and is unable to come up with anything, and still feels a strong moral aversion to anyone harming babies anywhere ever, then maybe it means you just intrinsically value not harming babies? As in, you value babies for reasons that go beyond the baby's personhood or lack thereoff?

(By the way, the abstract reason i managed to come up with was that current degree of personhood and future degree of personhood interact in additive ways. I'll react with appreciation to someone poking a hole in that, but I suspect I'll find another explanation rather than changing my mind. It's not that I necessarily value babies intrinsically - it's more that I don't fully understand my own preferences at an abstract level, but I do know that a moral system that allows gratuitous baby-killing must be one that does not match my preferences. So if you poke a hole in my abstract reasons, it merely means that my attempt to abstractly convey my preferences was wrong. It won't change the underlying preference.)

<But a good chunk of rationality is separating emotions from logic

Even if I insert "epistemic", i find this only partially true.

Edit: Although, my preferences do agree with yours to the extent that harming a young child does seem worse than harming a baby (though both are terrible enough to be illegal and punishable crimes). So I might respect the idea of merciful killing (in times of famine, for example) at a young age to prevent future death-inducing-suffering.