Board Thread:Warhammer 40k General Discussion/@comment-7232811-20130620224607/@comment-2093048-20140415161430

Morality is subjective. Therefore, one might as well discuss it in its context of its own subjectivity or not bother bringing it up at all. Just because people think it's right doesn't make it so, but it makes it right in its own subjective context. And that has to be good enough for discussion, else why bother discussing it?

In this case, the Imperium is a bit more moral than most of the chaotic factions are. They tend to step in when Imperial cults veer past too many peoples' moral standards (such as human sacrifice) and on a whole encourage selflessness a bit more. Although it varies by individual, you will find many more selfish dark elder and chaos followers than you would Imperial members. Even Chaos fluff doesn't deny most of its followers are selfish.

The factions typically associated with evil sometimes might be more morally above peoples' moral standards than the Imperium in some parts, but on a whole and on average, the Imperium tends to be higher up on many peoples' moral standards than most other factions. Every person has their own idea of moral standards but most of the "disorder" factions tend to cross beyond what one considers evil than the Imperium does.