It's true Bitcoin's being used in a different way to what Satoshi would've intended but we've still got a choice how to store cryptos.
After you create an innovation, it can be used in different ways and even in ways you did not imagine.
Gun powder, gun are examples of different ways to use an innovation. It can help human civilization or can bring painful experience to many people. A good innovation can be exploited by criminals but it is a different thing.
Criminals are not barriers to shut down human creativeness and innovations made by legendary people like Satoshi Nakamoto. There are always dark areas and wrong usages of any innovation.