What will be our tomorrow if most of us are involve with Bitcoin?

I don't think that this condition will came soon because many people ( who are a small % of the population of the world ) are involved in the Bitcoin .
Since the advantage of the Bitcoin is more than what we have with the normal fiat but still people are not preferring to use Bitcoin , the reason is simple i.e transaction fee .
So In my opinion we are in very starting and if we can buy in bulk then we can easily sell our Bitcoin at much higher price in the future of 10-20 years .
Well currently I am using my Bitcoin for trading to save for the future ,so hopefully we can assume that our future will be much cool with the Bitcoin in the fire .