I also play Xbox 360 games, but I pretty much ignore the achievements. If I get one, that's just fine. I don't go out of my way to try to get them though. I somewhat agree with you that they "ruin" the games in that they sometimes take away from the immersivenes of the experience. When you are playing a game where you are supposed to "become" the main character and inhabit some fantasy/sci fi/ alt. reality world, your suspension of disbelief is nearly knocked out of the sky by those little icons that pop up to let you know you've gotten some weird "achievement" or other. I also don't like it when the icon pops up to let you know someone on your friend list is now online and playing some other game at those times. It's like someone coming over to you and tapping you on the shoulder to ask you a question or something while you are trying to concentrate on the game.
I suppose those notices are handy when you are hoping some friend will come online so you can invite them to play with you or join a game they are in, but otherwise, it's annoying.
I suppose those notices are handy when you are hoping some friend will come online so you can invite them to play with you or join a game they are in, but otherwise, it's annoying.