Bitcoin is a digital abstraction of the currency component of money.
It is extremely useful in facilitating trusted digital transactions. There's really nothing like it that so effectively accomplishes the purpose it was designed for, surely new and better technologies will come along, but bitcoin has proven the concept.
Try transmitting gold or silver across the internet, you cant. Try making any kind of purchase over the internet without having to trust an intermediary party, or for that matter several intermediary parties. It just doesn't work. If you understand and trust bitcoin, you can transact with another individual with no intermediary, that is valuable to many people.
Bitcoin is has a very specific and important purpose in a digital economy.
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