BLM was my bff in 2.x and then 3.0 gave us Enochian. It's not nearly as difficult to keep up with now but when HW launched it was a pain. I switched to healing and haven't mained a DPS class since. I'm not complaining by any means. Enochian made the class more interesting to play and really raised the bar that separates a good BLM from a mediocre one. I just didn't want to deal with it.