I guess Yes It will be the universal currency in the future because of the trend of a computer. The online market or shoppine is now available which you can use bitcoin the buy or to shop online. And also bitcoin use to invest, to gamble and to trade that is why Bitcoin deserve to be a universal currency in the future.
Well, I also think that bitcoin will become our world currency. In addition to that, I think bitcoin will be our future money that you use in different kind of transaction and I hope could use it even in offline store. Lastly, I believe that bitcoin will be consider as a real money like you can use it in investing, trading and many more.