Money is a human invention.

You need to have people accepting that something is the proxy for value. This something can be anything, and over time it has been shells, gold, dollar bills, etc. Now it is also Bitcoin.

Now, because of the properties of Bitcoin, it is very attractive to basically almost everyone on the world right now, and increasingly into the future with technology advancing and connecting more and more people to the Internet.

It was almost a miracle that Bitcoin started having any kind of monetary value. But now, it would be difficult to remove that property as it's already spread all around the world.