Mommy, morality is getting into my games

It seems like after Bioshock came out with their ground breaking game full of new ideas such as plasmids, fps with rpg elements (to my knowlege), and most of all morality. A choice is given to the player to kill or save a little sister which has an effect on the ending as well as what you are able to upgrade and buy using ADAM. The same year (and quarter) mass effect used a paragon or renegade scale to determine if you were a friend or foe of the alliance. Now, it seems this is becoming a component of many games (mostly rpg's). Although the options were there before and were experience in sandbox gaming where a player could do what he/she pleased, it was never this obvious. From what I have heard the upcoming Prototype will have some sort of morality incorperated with the gameplay. This seems to be working but I am worried it will be overused in games that really don't need it. The only reason I can see it being relevant is in games such as Fallout 3 where your actions effect the ending as well as how people act around you and what missions you can do. I beleive this and Bioshock to be games which actualy used the morality instead of just giving the gamer something else to put on the in-game menu. Mass effect used it well in that they didn't emphasize it in the game and your actions affected reactions of AI but in the end, (spoiler..from 2007...gasp) sheperd won and the universe was salvaged. This trend, I beleive, will become very overused by January 1st 2011. This gives time for developers to create games which use the morality system multiple times. At this point in time it is a very fun addition as long as it effects the ending but just as platforming was used too much and nearly died after the N64, I beleive this will follow the same path.