[GhostVII]

Just because you need something, doesn't mean you need to use it. Decentralized communication is a fallback in the event that centralized communication fails, in the same way that cash is a fallback in the case that credit cards fail/are blocked. I don't carry cash, and I don't use decentralized communication methods, but I still think both are very important to have.

[fragmede]

If you need cash because the card network is down, then it's already too late to get cash. Thus, it's important to test the decentralized methods, just like it's important to test your backups. And if they haven't been tested (and have up to date instructions!) the only safe assumption is to assume they don't work.

[buckminster]

Governments are thinking about abolishing cash and when there are few enough users they will. Use it or lose it.