Because when u think about it. Bitcoin is the future of currency. U can transfer your money too all place around the world in minutes. Without bank, where when u want to transfer u must have a registered account. And it takes time to transfer a huge amount of money, and u must fill a paperwork too.
I agree that bitcoin is a future currency and its already unstoppable in this generation. When it comes to payment system its very convenient . Especially the technology is keep on innovating.