cash is king. doesn't matter the country, if it's physical and can pass from a persons hand to another and can't be tracked.
what is better?
I think the countries that have blocked it show a very good reason why crypto isn't going to replace cash, until it can truly replicate cash.
Also, lack of awareness and education about the use of cryptocurrency is another reason why people will always choose cash. Lots of people are still clueless about how cryptocurrency works and how they could use it. Normal people still prefer cash because it's acceptable in all forms of businesses and different transactions. If people would know how to use crypto, there's a possibility that more would switch to it.