Welcome back to "Doggerel," where I ramble on about words and phrases that are misused, abused, or just plain meaningless.
One metaphor I've chosen to describe my attitude about this bit of doggerel: "Do rainbows cease to be pretty once you find out they're cased by light refracting through water droplets?"
Yes, everything we know so far suggests people could be described as a very complicated set of particles interacting in a sophisticated manner. Love, joy, aesthetics, and so forth are a bunch of unpronounceable chemicals bouncing around in our heads. But how exactly does that make those things valueless? They still make me feel warm and fuzzy inside. A person is a person, regardless of what processes add up to giving them those characteristics we value.
I recently met a commenter on YouTube who tried to say us skeptics dehumanize people that way. Quite frankly, I fear the opposite if we ever end up with genuinely intelligent AIs (unlikely in my lifetime) or aliens (far more unlikely): Those who assign personhood by alleged supernatural characteristics, rather than actual characteristics could easily de"human"ize whoever they feel like. We know fundies have done it to humans with different pigmentation. Nothing stopping them from doing it again except secular efforts at shaming anyone who does.