My main is a hunter, and my alt is a rogue, Hunter is 62 and Rogue is 41, so i really don't have any end-game experience, but I do have lots of game experience with 7 other alts all at about lvl 30 (I get bored easily with some characters at about the lvl 25-30 mark),
Hunters and Rogues are the two most played classes that I know of, almost everyone has one or the other or both. That being said the percentage of retards playing the class is not going to differ any more than retards from any other class the difference is in the numbers, 50% of 10 is alot smaller than 50% of 1000.
Hunters are the quintessential "pet" class that people perceive as a solo class and Rogues are looked at as the main DPS class of the game, outside of mages of course but some people (myself included) don't like the idea of being beaten to a pulp in 2 seconds.
People play these classes as a simple "I WANNA DEAL DAMAGE" or "i wanna lvl up fast so I can get the good gear/ twink out my alts" or whetever the hell people like that think. Therefore, to be seen as a good player or welcome addition to the group you have to give yourself a name by playing your class, no matter what it is, well.
By this I mean, don't let people who see you playing a rogue go, oh he just wants to do damage, make them actually know that you're good at what you do and that damage is not the ONLY thing you're good at, survivng and CC are far more important than damage, you can't DO damage if you're dead.
As sad as it is, the only response I have to something like this,even after all that rambling is , L2P, and do it well, otherwise you're just another noob looking for a group