Well, the problem is that you can not protect your bitcoins against a falling bitcoin price if it happens. The price stability is taken away then since you can't buy nubits or the spread is huge.
Ok, i understand the reason but still unfortunately if you can't trust that your nubit is always worth $1. The theory doesn't help you then the same way like these other coins where the theory says they are stable but you can't use it because the order books are empty.