The concept of having no central entity control currency seems attractive to a lot of people. However, trust in some decentralised entity means trusting the way that they operate their business - how they’re able to audit their code, and write bug-free software. The only thing I know about software is that it isn’t ever bug-free. To reduce MTBF, you implement things multiple times, in disjoint environments. That said, the latest hack on a cryptocurrency/smart wallet I saw, made me wonder about their testing.