Building structures and creating vast landscapes in Minecraft might seem like a fool's errand but it's one of the most important things I've likely done in my life. Not only have the projects I've begun in Minecraft been carried out over several years, but they have taught me an invaluable number of life lessons:
1- Sometimes the best thing to do to keep moving forward is set yourself significantly backwards. There were a great many times I found myself stuck on a design, unable to quite get the colors I was using the match in the way I envisioned, or the structure of the whole building put too much weight on one side, or a landscape just didn't flow as I wanted it to. The best thing to do in those scenarios is to simply learn what you can from what you've done, and start with clean template. You aren't starting fresh - you have learned techniques, ideas, patterns that you can apply in new manners to build something anew.
2- Earth is an amazing planet home to hundreds of biomes, thousands of landscape types, and millions of wildlife species. Learning about different landscapes, the geology of the world and the way Earth's plates move is not only important common knowledge to know, it's knowledge that can improve your work in many fields, elevating your work to a higher level.
3- Designing something takes time - sometimes much more time than you care to admit. Over the 800+ hours of work funneled into this world, things are only starting to come together as one cohesive world. At no point in those 800 did I ever give up, ask myself why I was working on this, or ever think that this would not be worth it. The result has far surpassed any expectation I had ever set for myself and I learned a tremendous number of building techniques, design processes, facts about the world, and refined my patience, dedication, and critical analysis skills.
Minecraft certainly isn't a game for everyone, but it is a game everyone should know and understand. So many people have dedicated hours - many much more than I have - to learning so much in this game, most of which is directly translatable to the real world.