I've never really understood the ME3 rage. I got it in early June, and I have no-lifed SP and MP ever since. 43-44 hour long storyline that was very entertaining and felt great, watching almost all your past decisions influence the game? Great fun, and hell, the Multiplayer was probably the greatest surprise with the game.
It is one of those games I just feel like I got my money's worth, and so much more. The entire ME3 is, as someone just posted, the end of the trilogy and whatever choice you make at the end can not really belittle that (besides, I still think the D-ending is a good one and one I expected).