I have a use case,
It is a good use case ,Huge,
Zero users though
There are a lot of interesting use cases you can solve. Stop any person in your company and ask them , do you have a use case to solve? The answer invariably would be Yes(If it is NO often , you need to think hard about how much relevant your own product is for your own company)
The question is not just what use case you are solving, but how many users actually are there? And are they even your users?