I've been playing quite a bit of Minecraft lately... on peaceful mode. I occasionally show my hardcore gamer tendencies by cranking it up to easy, but I've just been really opposed to fighting anything after losing all of my valuable items a dozen times or so. I know that other players have felt the same whiplash when their diamond picks and other hard- earned items get blown to pieces. Everyone probably has a good system to survive in single player, so feel free to share them.