Personally, and I know this might come across as moralistic or even getting too wrapped up in a gaming world, but getting older (old at 33!) I've started feeling a little unhappy in games where I'm supposed to go out and, for some thin reason, slaughter anything. Perhaps it started with Shadow of the Colossus, actually.
"Go kill a bunch of these majestic eagles so I can make a headdress!" or "Let's show them not to mess with us!" Since when has that been a noble solution that ever worked in the real world? I *know* this is a fantasy world, yes, but my suspension of disbelief only goes so far.