So I've been playing Minecraft for a year now and have never used maps up until this point. Man this makes things a lot easier
Just started this world a few days ago with a friend, this really helps in planning where to place new buildings. Mesa biome is sweet!
It's also very nice to be able to know exactly where to go for my village trade routes. Pack up my trading goods on my mule, tether him and get on my trusty stead, and roll into the sunrise confident that I won't get lost.
Yeah, not that big a deal for everyone else, but this stupidly simple discovery has really revamped the game for me. Most complex navigation tool I've used before was a compass, or F3 to track down coordinates, but I always hate that because it feels like cheating. I also tried Rei's mini-map for awhile, but removed it pretty quickly because again it feels like cheating (just my perspective).