I love the stories and the leveling, but I've seen all the planets and all the side quests way too many times in that little time.
I think this is what killed my ability to enjoy the game. I started as a smuggler and found the story got progressively more boring with each planet. I finally gave up on Voss and tried to roll some alts, but doing all the quests over got extremely tedious. It might not have been so bad if warzones and flashpoints gave enough xp to realistically level a toon.