Let’s say that you want to build a huge pirate ship. These, however, would be impossible to plan and execute without correct coordinates in the Minecraft world. Making realistic objects in Minecraft is very popular and there are many impressive examples out there. One of the most useful things a player can do with coordinates in Minecraft is make notes of where these points of interest are. There are countless points of interest throughout the Minecraft world, including everything from the world spawn (where you spawn when you start for the first time,) villages, mansions, ruined portals, desert temples, and many more. There is plenty of walking ground to be covered, but you can also dig beneath the ground and fly across the sky.
Technically, it is nearly infinitely vast (in Bedrock Edition at least,) as the world is randomly generated while the player travels through it. If you’re making something big in Minecraft, you’re going to need your XYZ’s.
With so many things to do, knowing the geography of your map is often crucial, especially if you’re doing a building project.