That's the problem though. USDT will trade near $1, until it suddenly doesn't. And when it doesn't, it will crash hard, and anyone still holding Tether will be left bag holding and trying to sell at a fraction of its cost. And we don't know when that day will come because they are still refusing an audit.
They last pulled yet another $50 million out just over a week ago, bringing its total drop in marketcap to over $1 billion now. Their shady practices and unknown amount of funds won't last much longer. It won't be long before it's out of the top 10, which would be a good thing if it wasn't going to be replaced in the top 10 by TRON - an equally shit and shady coin.