I think the end is a bit too fast, i have read the indoctrination theory, and real or not,we will see.
But some thing on the game is really weird and make me think maybe the theory is right, i don't need an happy ending, it's very childish to ask for an happy ending, but yes, i like a ending more
"complete". People say "i want my choice count on the game" , but, this is an adult game, very intense, is a story of war, and is a tragic story, and in life and war, sometimes, what you have done count nothing. From ME1 Saren tell that you can't win, on ME2 they tell you can't win, on the comics books they tell you can't win, on ME3 they say you can't win.
Reapers destroy a part of life every 50.000 years, not 5 not 5000... so they have killed
real advanced races before human and others.
I ask myself what game are at level of ME, this game is amazing, and it's a 3d person game, i dont like it, when i see the review i tell myself "ok try it" and the addiction started.
This game is a milestone (for me) i have play the 2 and play much time for save all my team,
and now im plaing the 3 for the second time, next i play for full paragon, but for now im too addicted to the multiplayer with all my Shepard family. This game are so beautiful and the "journey" with it was/is so amazing that i can accept a too fast ending, however dlc is coming
so we only have to wait.