You're right - MongoDB did seduce me with big, bold promises and I even had it set up across some of my servers. Took me a whole lot of effort to get that far, then BAM, it all fell over and there I was like an idiot trying to get it back up when I could have been working on my startup instead.

The hard part of any new technology is bouncing back when things go wrong, and I don't have to do that now that a 3rd party does it for me, which brings me back around to Simple again.

There's a whole bunch of stuff I would like to learn but the reality is I can't have my startup falling over every time I fumble through learning something new, especially when what I already know can still solve problems.