Why is creating undead Evil?

[Troacctid]

Moreover, it's obviously not true that there's no way to mitigate the pollution of zombie production. You could make your zombies by sicking Mohrgs on outlying villages and having death priests wander around sweeping up the results with Rebuke Undead.

First off, by RAW, that does absolutely nothing to mitigate the pollution. Secondly, it's way more evil than just casting animate dead, because now in addition to creating undead, you're also murdering a bunch of random innocent people. So, not only does it not help, it's actively worse. Do you have any better ideas?