I just found out that there are about 80 local currencies in your country because so far I know there is only one fiat currency in a country. Nothing can match the advantages of Bitcoin, local/fiat currency is limited, while Bitcoin is general. Tell your friends we already have Bitcoin that is inflation-resistant and not regulated by any particular authority.
Using Bitcoin as a local currency is not viable. The currency is volatile and can have negative consequences on the local economy. National currencies can be controlled by monetary policies but bitcoin is an international currency that cannot be easily influenced. Bitcoin is growing to the stage when it will be stable but for now, using it as a currency will make these local economies unstable.
People talk all the time about inflation, centralization, and government control, they always seek to criticize their fiat or national currency and exaggerate the power of bitcoin. They argued that substituting bitcoin for all other currencies would make the economy better. But how does a highly volatile currency or asset make the economy better? It can even destroy the economy in the fastest time possible. I still hold the old view that bitcoin is too volatile, it is more suitable as an asset than a currency.