I don't understand all these "why we're not using NoSQL" posts. Why is it interesting that someone choose the default choice? Why would they use a NoSQL database of some sort for a major project unless they actually had a need for it? I'm half expecting a "why we don't use Brainfuck"* post one of these days...

*Not that I'm comparing any NoSQL database or NoSQL databases in general to Brainfuck, it's just that I don't see the point of "why we don't use X" posts when there was no particular reason to suppose that they might use X in the first place.