Yeah, DPS is hardly "easy"... not sure why people think so.
Like for instance I wanted to try endgame tanking, so my friend and I went into Alex Floor One (normal mode...I don't like tanking). I was like "so, what do I do?" He told me to just keep hate.
I swear I was falling asleep by the end of the battle, while if I had gone DPS like usual I would've been way stressed out.