It's depressing that a half-baked constantly problematic effort like MongoDB wins while this gets neglected. Unfortunately we still live in a world where marketing beats merit.

:) You nailed it. I think MongoDB was interesting experiment and can be used, but RethinkDB shows you how it should be done right.

MySQL was for long time default choice over PgSQL, yet once developers matured, quality won. Just it took a decade :)

It's always like this. Just look at Windows; if people cared about quality, no one would be complaining about Windows 10 giving them grief because Microsoft would be out of business or relegated to some business software niche, and we'd all be running some kind of Unix variant or maybe some descendant of BeOS or OS/2.