Let's barter with some shells shall we?
Digital currency is happening in our lifetime. Our children will be the first true users as they will accept it as the norm, there are already "stablecoins" which are designed to stay at the same price as the currency they replicate. The innovation in the space is revolutionary and extends much further than Bitcoin. Yes, there are pitfalls but who remembers the early internet, it was a mess.
We are now ten years into a digital currency revolution, major banks and corporations are doing their best to understand it and catch up. The truth is, it's too late to stop it. Reading a lot of comments in here proves that the majority of people still don't fully understand the sea change that is happening. This is like the early internet where people didn't quite "get it" and there were very few users. Jeff Bezos had to explain the internet to his prospective backers.
Whether you like it or not, this is the future. Simple example, when the human race gets adept at interstellar travel, what will be the store of value? Moving/mining precious metals? Highly speculative and expensive to transport. You'll be able to send digital currencies via most networks.