Why is creating undead Evil?

[Troacctid]

So, as I read it, the Libris Mortis explanation basically admits, "no, D&D morality doesn't actually make any sense; please homebrew whatever answer works for your table for underlying reasons that could produce this illogical mess, where {X,y, z} are evil, but {p,q,r} are not".

No, it's the exact opposite. It shows that not only does it make sense, but also that there are multiple alternative explanations that would also make sense.

Your claiming it doesn't make sense, for me, has the same energy as comedians saying they should just make the whole plane out of that stuff, or that the architect who put that improbable ventilation shaft in the Death Star should be fired. It's like a joke that's only funny if you don't understand the source material.