So not only is it useless, it takes up a huge chunk of your processor and continually pops up acting like the used car salesman from hell. No thanks! No one should use that garbage.
So in the previous expansion, they seemed to continue more casual gamer targeting, at least for PvE content. They made dungeons a hell of a lot easier, toned down raids in normal mode and so on. Very casual friendly. However in the current one they turned the difficulty way up, dungeons were a real challenge and raid were more old school. Also in PvP they have continually targeted more and more hardcore people, putting emphasis on the "digital sport" type of thing. This leads to a problem because gamers can't get what they want and it makes everyone unhappy. Hardcore types get mad when it gets easier, causal types get mad when it gets harder. Everyone seems to get mad when things just suddenly change
That's one of the best explanations I've heard and it's 100% true.
"Card readers? We don't need no stinking card readers." -- Peter da Silva (at the National Academy of Sciencies, 1965, in a particularly vivid fantasy)