First it was just shooters, then it went to other genres. Now even some RPGs have it.
Shooters have been rather dull since it became popular, and now it's tainting other genres. Why did it become so popular, and more importantly, when well it end? I think Halo started it, even though it did it much better than most games today.
Yeah gotta say i'm not a fan of it. It's so prevalent because it makes it easier for developers to balance the game. We're reaching a point where all games are kinda feeling the same. Which is great from a usability stand point, but bad if you want a new experience.