I would argue that there is literally never a reason to use MongoDB over other solutions. It looks tempting at first, but in reality it has all the downsides of

I would argue that there is literally never a reason to use MongoDB over other solutions. It looks tempting at first, but in reality it has all the downsides of any other database and a whole lot more junk heaped on top. YMMV of course; that might just be my biased view after weeks of trying to improve performance.