So a Minecraft world has a little over 14 trillion chunks. Each chunk has approximately 1,850 dirt. If you were to dig up every single dirt block, you would have to dig up 25,900,000,000,000,000 blocks of dirt. Dirt takes 0.75 seconds to mine with your fist. Now if you were to dig up every piece of dirt with your fist, it would take 19,425,000,000,000,000 seconds, or approximately 6,245,177 centuries, or approximately 615,963 millenniums. Which is a lot less time than you spend on the toilet.