Western countries are rapidly moving from being high-trust to low-trust societies. The reasons for this are multifaceted, complex, and self-reinforcing, and it isn't likely that the trend will be reversed any time soon. Certainly not within our lifetimes. So we can either stick our heads in the sand about it, or develop technologies to deal with it as best we can. I'm not a crypto fan myself, but I understand why it exists and why it will probably be increasingly important as time goes on.