Now is 2019 which mean.. years after years we can see era going to modern , all going to modern.. for example transportaions , building going higher , and most important is payment for any transactions.. now you can use Paypal , Digital cryptocurrency.. one of them is bitcoin , most popular crypto in the world
In this modern era , we need cryptocurrency like bitcoin because bitcoin can use for everything now.. you can buy or rent building and pay it with bitcoin , for example it happen on Japan.