Welfare epics killed WoW...plain and simple. 95% of WotLK awards mediocrity with an overpowered sense of achievement. Many players are wearing gear they haven't really 'earned'. They stood there and AoE'd down 40 mobs, tanked 1 boss, looted an epic and now call themselves 'raiders'. It required no preparation, no skill and yet they are 'raiders'. Imba hawtness, leetzor, now you look just like the nub next to you who did the same, looks the same and 'experienced' the same content.
The gear is too easy to get, and with Blizzard pandering to the masses by making the 'content' accessible, they have created their own biggest stumbling block. Soon the better players (dare I say real raiders) will move on to the next game and the OMGIAML33T masses will realise that they in fact don't really know how to play their class and have in fact achieved nothing.
Do I sound elitist? Probably, but I remember the days of running passed a High Warlord and stopping to salute. I remember the days of seeing people in gear from the 'real' Naxx and wishing I was a part of that. I remember the days of a timed Baron run.....I remember very little of WotLK besides Group / AoE / Loot / rinse - repeat...