The future of money is here, recent price increase is due to lack of trust and confidence in the current fiat system. A lot of buzz going around about bitcoin right now, once we crack the $10k mark... we will see interest explode from the average Joe.
Everyone says "what if I had got in during the early days?"
I say "what if its still early?"

Yes, it may be one world currency but it will take time, bitcoin now is facing several problems such as higher transaction fees and slower confirmation rate due to large number of transactions per day. But if this problems are solved , no doubt , bitcoin will accept by atleast 80% of nations in this world and it will revolutionized our use of currencies.