Why is creating undead Evil?

[Psyren]

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?

"Look how much more evil I COULD be doing!! Wouldn't it just be better for everyone concerned if you let me cast animate dead as much as I wanted instead? Honestly, I'm doing you all a favor here!"