[Theori]

If you play a demon, you're signing up for an incredibly rough time. Honestly, the fact that they are essentially a black-and-white issue to the extent you either have to 100% be an antag, compromise your ic, or else be an idiot to interact positively with them is why, in all honesty, I feel like they're best kept as ECs or else left in the past. Now mind you, I'm not saying that first encounter killing demons is at all appropriate -and the 'I thought I killed you but didn't' is always a fair option- but if you sign up to play a demon, you're not going to have a good time if you're not prepared for hardcore mode.

Realistically, people who are almost unanimously of a culture which despises demons, and have a recent history of demons being disastrous when allowed to run free are not going to like demons. They are going to attempt to kill them. That is what you signed up for. People definitely should excercise the left-for-dead approach, but its not fair to make them out to be 'hur dur kill everything bad' when there's a lot of justification for the decision.