Bitcoin as only the main and working currency? Well no such thing now as desiring for a skyrocket price since fiat currency are now undervalued. So even it will worth $100,000 per single bitcoin, it's no use now since bitcoin is now the most used currency for all institutions such as merchants, goods, business and physical transactions.

Believe me, it's not good to see bitcoin as the only working main currency. If you think outside the box you will get the point here.