I've S-ranked CiT, and I have no desire to play it (or any of the other R&C games I have) ever again.  The main dilemma here, however, is I've made a New Years Resolution to finish up my 21-game-strong backlog before trading for or buying any new games.  I've heard good things about Nier's story, and I'd be willing to beat it 4 times to get the full of it.   
Do you think I should break my resolution to get this game, or keep at it? 
 
P.S. The reason I'm not playing any of my R&C games it that I've already played them all to death (I beat part 2 about 10 times).  They are by no means bad games; I just can't see myself playing them again any time soon. 

Continue with the backlog.  Games are expensive!!!  Enjoy what you have!

Nier is a great game, still it is very depressing. If you think you can deal with it, go for it!

Nier is awesome, pick it up.

I couldn't get through Nier more than once (I plan on doing it someday though)
 
But it's worth a try. If you're really determined to get all the endings, I say go for it.

If you read that without and caps, it sounds like you want to trade drugs in time to get Nier. 

" If you read that without and caps, it sounds like you want to trade drugs in time to get Nier.  "

Wait, your backlog consists of only 21 games? Dude, if you head over to Backloggery.com and click a bunch of random users on the front page, you'll find people with backlogs spanning at least 10 times that much -- including myself. So don't feel bad about your highly modest backlog, and go ahead and trade in R&C for one of the best games of last year.
 
Don't bother getting all of the endings, though. You really only need to get to the second ending (which should only take about 4 hours as the game starts you off two-thirds of the way through -- though my first full playthrough took 20 hours) because you'll encounter additional narrative content along the way, but if you go for the 3rd and 4th ending, that content will be the same and only the ending will be different, so I personally recommend you just head on over to YouTube and watch the endings there.

" If you read that without and caps, it sounds like you want to trade drugs in time to get Nier.  "

Forget about it.  The guy already went to another person to trade with.  No matter; now I can concentrate a bit more on my classwork.  I'm actually thinking of starting to stream games on justin.tv, but I don' know whether to get EasyCap or Dazzle.