May be there is hope that bitcoin could become international cryptocurrency and definitely it's the future currency. not necessary that bitcoin would become future money but even if other money becomes future money then also bitcoin is three foundation of all.
First you need to answer yourself what currency you now most needed. What do you use every day and which take their profits. I can definitely answer these questions it is real money and only bitcoin is of secondary importance, and extra income. But still we need real money.
I know what currency I need but I want bitcoin for my future, as a person and investor by heart I do not intend to see only one coin in the future as I am happy with the current situation now, the fact that fiat is existing and I can also bitcoin as my investment it gives me more meaningful life.