Is Mass Effect 3 worth replaying?

I'd say yes, if you haven't see the Extended Cut and haven't played the DLCs. The DLCs worth playing are Citadel and Leviathan. Citadel because it adds a lot of great, funny character moments, Leviathan because it helps to flesh out the ending of the game a lot, and give it more backstory.

You can skip Omega because it doesn't add anything worthwhile.

Like everybody else i loved the game but hated the ending. Should I replay again with all the dlc? Are all the dlcs good? I heard the last dlc(Citadel) is epic.

Yes, you should play again especially if you haven't seen the extended endings, they are much better then the originals. Also pick up the Leviathan and Citadel DLC because they are awesome....Omega DLC is optional, while I enjoyed the DLC its not imperative to own.

Thanks guys, will defintely replay.

finished it about 5 times, new ending is worth it. Vanilla end was terrible

I hear the DLCs are good. None of the Mass Effect games are bad and changing up your choices and stuff can net you slightly different results, not to mention playing as a different class can change how you have to fight.

I would say it's worth replaying. 

This year I plan on doing a ME1, ME2, ME3 replay with all of the DLC. Probably next winter sometime.

Not by itself but worth it after completing the previous games with different choices. They pay off in different ways in the third game.

I think they are worth replaying.  The Extended cut is definitely more satisfying and the single player dlc make it much more enjoyable and add a great deal of back story. 

i wouldn't say it's even worth playing in the first place