Earlier quoted context omitted.
I did need a schemaless store for a project I was prototyping, but then I didn't see why I had to install MongoDB just to get a simple schemaless store. So, I wrote Goatfish: https://github.com/stochastic-technologies/goatfish/
Wait, you found it too difficult and time-consuming to install software, so instead you wrote software?
Same reason people use SQLite instead of MySQL or Postgres. Don't want to have to deal with keeping a database server up.