Current price of bitcoin is ~9.9k total supply is well over 17 million. lets call it 10k and 20 million. We're sitting at ~ 0.2 trillion. For that you could buy paypal, square, moneygram and Western Union and still have plenty left over.
That's fairly surprising. Bitcoin alone is within striking distance of the market cap of visa.
For example, if you purchase SaaS products with Bitcoin, you don't need to trust that the service provider or their merchant provider will handle your personally identifiable information with care (eg. billing info), because you didn't have to provide the information.
Perhaps there are other utility uses for Bitcoin that will eventually lead to demand based on something more than fear?
How many of those 17 million have been effectively lost forever?