On my reading I thought - no need to justify this obviously cool project! I think sometimes people feel the need to have a good reason to do something, even when they are doing it because it's just intrinsically awesome. I've totally overengineered my home network, and have spent more than I probably should have, but I don't think it's a waste at all because there is something deeply satisfying about it. But when I defend my purchases to others I am tempted to say, "I need good internet for work", or "we run many IoT devices" and those things are true, but could have been completed with much less time, money and effort.
It's a learning experience, and a hobby. And there's absolutely nothing wrong with finding joy in that, and absolutely no reason to have to explain it to others, because you're likely the only person who gets it.
