Most of the society agrees that Bitcoin and other cryptocurrencies are not for everyday transactions (something we should discuss with the broader audience!),

This is not entirely true. There are a wide range of cryptocurrencies that perform differently and a huge chunk of them can facilitate day-to-day transactions. A typical example of hive is feeless and fast.

but what about central bank digital currencies? They could become a regulated, user-friendly digital alternative to traditional currencies. Several countries are on the verge of launching them

This defeats the purpose of decentralized which crypto is built on. There currently exist different digital channels to transact, however, they are not decentralized and the masses do not trust this central system because most lack transparency.