Trophies and achievements are more less like bragging rights, or sense of completion for a completest. For some it seems complete platinuming your favorite game.
What annoys some about online achievements is requiring certain online elements that force the player to play with strangers or hope you got a huge friend list to obtain the achievements. Not a requirement or gun to the head to get these, but some want to get them all. Main topic here, Mass Effect was always a single player and better off without a multi-player mode.
I still don't see that being a problem since your on a online forum.
There are places like hupit gaming or gamedunzo where you can find people to play with. Or you can go to the games community forum to find people. Its not like you are out in a jungle in Africa or something.
Once again I'm not trying to hate on anyone. I just think if Bioware puts multiplayer in it we shouldn't hate on them like they are raping out childhood or something.
I'm not saying the game needs it. But I'm not going to auto hate on them if they feel they want to put it in a game. I could see people's complaints with a game like Parasite Eve where its a horror game. IE Dead Space. But Mass Effect is a little less about being alone in a world like Metroid or my past example Dead Space.
Just my opinion. No hate.