I can sometimes get annoyed with the phrase "it's just a game," which of course applies to roleplaying as well. Obviously, it's not just a game, it's recreational devices that a lot people invest quite a bit of time (and sometimes currency) into, and when those who think that "it's just a game" take things for granted by ignoring rules, not responding, or otherwise undermine everyone else because the device is dog shit to them, I can get pretty cranky.