The only MMORPG I've played for longer than 1hr was Star Wars : Galaxies and at first, I thought it was the absolute bee's knees. My own character traversing the likes of Tatooine and other exotic locales with others. But it all went downhill after a certain point once I realised how unattainable being a Jedi character class was to a recreational player like me. If I remember right, each character class had be fully mastered before you could be come a Jedi, requiring a lot of hours. And it wasn't long until the repetition set in and I grew bored of it pretty quick.
Bioware seems to be in a roll lately so I'll have some optimism for it. I'm very curious to see how the moral angle, unique storylines and even cutscenes will work.