system
Given the following post, respond as if you're commenting on Reddit:
human
[Dungeons and Dragons] Why is the Necromancy school of magic considered evil, but Enchantment isn't?

Yes, Necromancy involves channelling negative energies to, among other things, cause corpses to rise as mindless servants. It's certainly disrespectful of the fallen.

But Enchantment is about subverting the will of other people, either making them more pliable or outright taking control of them. It's the school of magic roofies and slavery, and there are very few excuses for law-abiding people having anything to do with either.

So why does Enchantment get a pass?
gpt
Necromancy has bad publicity due to its association with the undead. Depending on your setting (please consult your DM before making general assumptions about your world) various types undead are likely to be some of the most dangerous “common monsters” that people are likely to encounter, and rogue-necromancers are some of the most common “villains” who might cause trouble for the village. 

Rogue-Enchanters on the other hand tend to be much more subtle in their villainy. They would probably seem to most people to be just an especially successful burgermeister.