It's a great piece of hardware, of which I've used dozens for various purposes. But they draw ~10 times more power than, say, a cheap Linksys wifi router. So if all you're after is a SoHo wifi router, it might not be the best way to go.
They don't. Mine draw under 10W, which is well within range of a Linksys thing.
Mine draw around 10W idle, about 15W when active. My Linksys and TP-Link trinkets draw under 2W idle (which I'm guessing is my power meter's minimum value), and not much more when active.
Power meters generally don't well measuring low loads, 2W sounds like an error.
That's fair, but I don't know of any SOHO routers I trust, which is what led me to it. It's a tradeoff, but the same tradeoff being made by these mikrotik users.