Why is creating undead Evil?

[Troacctid]

I know it's not so much your own opinion as retelling of an article in Libris Mortis, but allow me to comment on it


None of that explain neither:
existence of Good Liches and Undead Paladins,
nor why Crypt Things and Gravecrawlers are "always Neutral",
nor - for that matter - why Entropic Creature template doesn't affects alignment (easily can be Entropic Paladin - +2 to Con and Cha is handy, and LA +2 isn't too crippling).

Heck, Xeg-Yi Energon is made of Negative Energy, but its alignment is "Always neutral", and neither summoning nor calling it to Material Plane count as [Evil] act

I feel like the answer here is extremely obvious: negative energy has different effects when used in different ways, which is why some uses of it are evil and some are not. This was covered upthread, multiple times. It's also covered in the post you literally just quoted. There's no contradiction whatsoever.