No, that really isn't helpful unless you want a novelty domain name that nobody else (roughly speaking) can resolve. (And which, as a result, you can't send or receive email from, obtain an SSL certificate for, get indexed by search engines, etc.)
Sure, there might be other requirements, and it's not clear what the exact use case is, but it also might be useful.
That's actually a fun exercise to come up with these use cases.