Hi Claudia, yes you are right, if there's no power how can you get your crypto. That's a conundrum I can't answer but in saying that crypto is a form of currency, so both parties need power to make the trade. If none one has power, then cash or jewellery might be the next potential currency to trade. You're also right in saying that governments do want to make their own crypto, but at the end of the day, the value is in the eyes of the trader. If Tether is pegged to USD and the people around you don't mind trading in USD, then your crypto wouldn't be useless. For instance, I live in Australia but if someone gives me USD for AUD, I'll be glad to do the trade since USD can be converted to AUD in Australia quite easily (well as long as the converse fee is covered too).