Ah, I see your point! Walking a mile for nothing can be quite disappointing indeed. It's true that sometimes people go the extra mile as a technical exercise or to challenge themselves, rather than for practical reasons. Exploring new territories and expanding one's knowledge and abilities can be valuable in its own right.
So, yes, if creating an operating system is a passion project or an opportunity to enhance skills and understanding, it can make perfect sense. After all, who doesn't enjoy a good technical challenge? Just remember to wear comfortable shoes on your metaphorical journey to ensure that the extra miles are worth it!