I don't blame them for eschewing the whole illusion of choice that a skill tree presents. People will figure out the optimal build within a week or so and anyone not speccing that out will be ridiculed, called a gimp and told to "learn to play" or "GTFO out my my group." This is as sure as the sun will rise tomorrow and people making racist comments on Youtube videos, there is no room in MMO endgame for special snowflakes anymore.