because a lot of people are yet to accept bitcoins but once it become accepted by majority, I think there will definitely be no reason to convert to fiat.
A time when bitcoin will become accepted as a means of exchange, a time when we will no longer have to convert our bitcoin to fiat before we can spend it on goods, services, food stuffs and other basic stuffs is really a time I am personally waiting for, it will be so great to enter sites like Aliexpress, ebay, Amazon etc to order great stuffs and comfortably and conveniently pay with Bitcoin, and receive those items here in my country easily..
I am so so waiting for that times and I hope it happens real soon, I will be the happiest.