Faster and cheaper transactions that don't get locked up by the whims of a bureaucracy. They continue to operate on non-business days.
At the end of the day, for better or worse, the US dollar is backed by the US military. Virtual coins are backed by the greater fool.
What a strange toss-up.
That’s also a downside: When your funds can be transferred away by anyone who happens to acquire the key without triggering any fraud prevention or additional verification checks, losing your entire bank account at 4AM Sunday morning becomes much easier.