It's for people that don't want to handle the backend - whether they know how to work with it or not. Also, firebase provides client libraries for some environm

It's for people that don't want to handle the backend - whether they know how to work with it or not. Also, firebase provides client libraries for some environments, completely hiding the networking layer from the user of the library. You're using a high-level model while firebase actually does all the heavy lifting for you, which is extremely appealing for people that need to get an mvp out as quickly as possible.