Upd about raiding in Cataclysm

All the mentions I read about it is that 25man raiding is progression, prestige and serious business, while 10 is for fun and relaxing after srs bsns in 25. I see it like this: people doing 25mans do it not for fun of the game, but cause of their Ego and epeen.
Aaaand because they can slack in 25 while others do the srs job, haha.