There are use cases for it, just as there are use cases for any type of database. The biggest source of problems that so many of us ran into, was using MongoDB

There are use cases for it, just as there are use cases for any type of database. The biggest source of problems that so many of us ran into, was using MongoDB as the Swiss army knife for projects. At the end of the day, most data is relational, and should be put in a relational database. Otherwise, you'll end up running into roadblocks, and inefficient work arounds shoehorning in relational operations.