What grates my nerves isn't primarily Bitfinex/Tether, it's the other exchanges. Why did they accept Tether? Of all the 'altcoins', one backed by an asset like cash is the easiest to verify (or be skeptical of if verification requests are dismissed or ignored). When I signed onto Bittrex, USDT was one of the prominent trading pairs. It was a useful trading pair, because instead of seeing numbers like ".000000314121 : 1 BTC", you'd get a dollar figure you could mentally parse. Of course, the damned software could have done that automatically with a currency of the user's choice. That's kind of a tangent, though. Why weren't the other exchanges more critical of Tether and kept it after months of controversy and skepticism?