system
Given the following post, respond as if you're commenting on Reddit:
human
[Warhammer 40k] What exactly is wrong with heresy?
gpt
It's illegal.  It's an insult to the Emperor who suffers every second on the Throne for *your* safety.

But most of all its *dangerous.*  Heresy can doom not just you, but your whole planet (depending on the type).  Whether your actions summon demons to destroy your world, or trick your fellow man into trusting vile xenos.

Some types of heresy seem neglible, reading some strange book.  Using some xenos tech to make some fast coin.  But it all adds up.  It drags you further and further into its filth.  Even inquisitors are not immune.  Battling heresy requires constant vigilence in the Emperor's name.