It is but the story's are decent. I enjoyed getting from 1 to 50 but I had no desires to engage in the typical endgame raiding in that game.
I played the game when it was first released and stopped shortly after.
The main story line is a lot of fun, I suggest either starting with Sith Warrior or Operative both have cool stories.
The raiding in the game wasn't bad but when I was playing there was only 2 raids, and one was damn near impossible to beat on hardmode because it was so bugged that the last boss (Soa) would just de-spawn seconds before dying. The real thing that is hard to play about SWTOR though is the side missions, because aside from the main story there is no variation
at all every world is a quest hub and you have to do all the sidequests which never change to level your character properly to 50.
I couldn't play more then 2 characters to 50 because I got so sick of doing the same world, and same side quests over and over again.