Yes, still use it, together with GridFS. We mostly use it as a persistence store for SOAP message dumps from XML to JSON in Java; everything else usually reside

Yes, still use it, together with GridFS. We mostly use it as a persistence store for SOAP message dumps from XML to JSON in Java; everything else usually resides in a Postgres or Aurora RDS database on AWS or some legacy Oracle/MSSQL stuff elsewhere (which we try to get rid of). The issue with most of this stuff is that a lot of projects just need some persistence and basic querying, and almost any database can do that equally fine. At that point, maintenance, ops workload in general or reliability are the differentiators and most of those go away when you run them as a service with your cloud provider of choice. Which specific one you use is practically selected for you: take all the ones that are compatible with your application or framework and sort by price.