Mindless undead are Evil because they NEED to be. If they are neutral, then necromancy isn't evil. It disrupts game balance. It goes in directions that disrupts PrC game balance, reasoning for opinions about undead, a whole lot of shit.
It's why these sickos are arguing for mindless undead being neutral. Because once you rule mindless undead aren't evil, you can rule that not all necromancy is evil, and then before you know it, my daughter is having sex with a lich.
UNDEAD AREN'T REAL.
Okay? Suck that part up, chummers. So, since they are 'created' in the game. The game has to follow rules. To make sure the rules and theme are supported, certain things need to be certain ways. Mindless undead cannot be neutral without throwing the game out of balance. They need to be evil. Certain classes are Alignment: Evil only. They are meant to be NPC classes. Good PCs aren't supposed to be raising armies of skeletons to defeat the Big Bad Guy. It's not the point of D&D. It's not the creators vision. And like it or not, it's Their Game. You want to play in their game, you follow their rules. That Means Undead Are Evil.
So Yes, they are evil because the rules REQUIRE them to be evil. Nothing else fits.
Whoa there, that's a heck of a slippery slope fallacy you're committing. First off, you're assuming that all necromancy is Evil. It isn't. In fact, the majority of Necromancy spells that
are evil are the ones that create Undead. You then jump to the idea that, if not all Necromancy is Evil, it will lead to other things that should be Evil to be Not Evil. So not only is that a Slippery Slope fallacy, but it's based on an untrue premise.
Also, you're assuming that PCs shouldn't ever be Evil, because "that's not what the designers intended." That may be true, but it certainly isn't the
only way to play. The designers themselves admitted this, in the very same sentence in which they said PCs should be Good or Neutral (PHB, 103). Based on this assumption, you argue that classes that require an Evil alignment are supposed to be NPC-only, and furthermore that a PC with access to such a class would "disrupt game balance." Seriously? I'll freely admit that there are some classes meant for Evil characters that can be abused, but certainly not
all of them, and they are certainly not any more abusable than their non-Evil counterparts.
You also claim that creating undead armies is solely the purview of Evil characters, and "PCs aren't supposed to be raising armies of skeletons." What about Clerics of Wee Jas? or Dread Necromancers? Or Bone Knights? All of these are classes that were intended for PC use, and have the ability to create and/or control undead. Speaking as the current player of a Dread Necromancer, I can testify that having an army of undead does not disrupt game balance in the slightest.
That being said, if you would like to discuss
why and
how the game would change if mindless undead weren't Evil, I'd totally be up for that. I think that could be a very interesting discussion.
Slightly off topic (and probably controversial), but what is inherently Evil about having sex with a Lich? Sure the Lich-loved feat has the Vile tag, but I disagree that having sex with undead is inherently Evil for the same reason that having sex with a Nymph is inherently Good. If it's consensual sex between 2 beings, what's the problem? The exception would be sex with mindless undead, because they don't have the intellectual capacity to give consent so it's basically rape. Which is 100% Evil, no exceptions.