So I know I'm really late to the party but I just finished Mass Effect 3 and I'm a bit head fucked, but not in a fun Donnie Darko way, in a "what the fuck was that?" type of way.
If it's not obvious I'm going to be mentioning spoilers.
I beat the game but before walking my Shepard to one of my three choices I did my research. I was already spoiled long ago that Shepard dies so I didn't care so much about ruining the last cutscene, I sort of wanted to see which was the best option for the galaxy. After reading countless threads about synthesis, control, and destroy I decided my Paragon Shepard would pick control and act as a guardian to the galaxy. Pretty happy with that decision, only I sort of wanted to pick synthesis because it's a bold new direction for everyone and it changes the ME universe in a very cool way. I just had this nagging feeling that's what the Reapers wanted me to pick and forcing everyone to change their DNA isn't very paragon. I didn't want destroy because I worked so hard with the Geth and I love EDI and to kill them like that will never sit well with me. Control had it's ups and downs also, I mean Shepard isn't one about having ultimate power so that felt weird but that's what I picked because that seemed like the lesser of the three evils.
What did you pick and why? After all this time of people complaining about the ending I thought it was only because not a lot was explained, but now I realize it's because Bioware really screwed the pooch on the choices they present and then fleshing them out to show you what you've done.
I played the game with all the DLC installed and with the extended ending.