>> As far as "Why did you kill me?", is that really so bad? I mean that, when you get killed five times by the same person, you'd at least want to make sure that they're killing you for some IC reason.

Almost 100% of the time it is bad. You should never expect an explanation as to why someone attacked you, I personally like a little rp to go along with my pks but I dread when they take on the tone "Why did you kill me?". I have never heard this when it did not sound like a whine. But more so, you should not be looking for your assailants IC reason for attacking/killing you, it is not your responsibility to make sure they are within their role, assume they are. The more you worry about if someone else has a IC reason for doing something to you the more you are going to get frustrated when it is not obvious.

The best advice is to have fun, keep yourself IC at all times and not worry so much about the rp of others around you, you'll have more fun I guarantee it.