Depends on the individual mindset and which challenge you take on. What means "it's not supposed to". Not like anyone would decide this for you. You can have quite some fun/satisfaction carving your map, especially when you have a clear goal/picture to see your progress. There may be people who like to participate in the map/project or, when criticizing, I deal with it, too, in order to display what could be advantageous for it. I have worked for a couple of years on my main project and still have my motivation here and there, also because you can learn new things during the development.