Actually I just wanted to do raid, so I joined a "progressive" guild, got Kingslayer-title on two characters and that's how it could have continued...
Then I noticed some weird stuff here and there. First of all there was the usual inner circle. They pretty much raided every night with multiple characters in multiple guilds. That's not unusual per se. Not unusual is also that they all play paladins. Unusual is that they multiple paladin accounts. The guild leader for instance has a full-bis paladin which he isn't playing. He has his normal paladin that he plays the raids with and another paladin twink that he is currently gearing up. They all have multiple accounts either on the shelf or currently in the works. They are very focussed on collecting primals, which is the shadow money on Warmane, because it doesn't get squished. They are also playing the auction house game a lot, even though their characters don't really need anything. And last but not least, they all come from poor countries in eastern Europe where $500 - what bis-chars used to go for - equals the salary of half a year. So I guess, I joined some sort of company and apparently I only made the "employee of the month" in the beginning when we went from 10/12 to 12/12 + 6hc. After that I apparently became expendable. Since my classes were competing on Int/Haste items with their paladins and - even worse - on heroic emblems, it kinda went south pretty fast, but that's just one possible explanation of course. It would fit the pattern, but esentially they made me leave.
For me WoW is some sort of challenge, like sports. I don't want to be part of someone's business model, especially I don't want to work in a sweatshop.
P.S.: Why do paladins have the highest potential? They got three viable specs and the ability to wield Shadowmourne. Paladin is the best "investment".