Coming off of games where you have the freedom to make every block, swing and fire, Dragon Age Origin's gameplay was a real turn off for me as memories of games like KOTOR and MMO's were so far behind me, I forgot that this type of combat still existed.
I was patient, did a bit of reading online about how to master the combat system and learned that the best way to play was to pause, issue commands and repeat. Once I learned that, I was able to enjoy the game.
So in essence, once you are able to fluently use the tools (driving the mechanics) dragon age provides you to play, you can then enjoy the game.
That being said, if you simply can't get into it because of the gameplay, I'd suggest picking up the second one. The combat is something like Fable or any other button masher. Plus, its hard to be disappointed with it if you haven't played the first one.