Is ME3 worth playing if you haven't played other 2 prequels?

[Player1x3]

SvennoJ said:
If you like story the most, play the first one.
If you value combat the most play the 3rd one.
If you like combat and interesting character background stories play ME2.

well, seeing as how i have no idea what the story is, and dont know any characters...i should choose 3?