I can relate. It's a sign of disrespect but it depends on who it is coming from as well. If it's from friends I can only laugh about it, but from randoms it feels like rubbing extra salt in the wound.
In the end I just try to put it in perspective and realize it's just a game. It's not like you get hit in real life or feel the pain yourselves, so just let them do what they want to do.
@Pictured Mind: Many people do not realize that you are not trying to provoke them and are easily offended. I used to be pretty mad at overkilling as well until I discovered that most of the time there is no meaning behind it at all.