4.0.1, Pre Cataclysm patch

Tanks and healers do have more control over the fight but i would say you are over simplifying it. There is more too it that standing in one spot, most fights have little gimmicks for the dps and sometimes healers to work around. Most bosses have an attack that doesn't target one player, but an area of the room so you have to move from that or a move that gives people debuffs that have to be dealt with in certain ways. And even then, raiding isn't even close to all the game can offer. It kinda sounds like you might be more into PvP were you can be a lot more self reliant and have more control whether you win or lose.