Honestly I believe bitcoin is better since one you don't use your credit card so you don't loose you needed cash but instead your cash that you could easily earn back from mining. Plus, it's open to all ages unlike credit cards.
Maybe for some people they see regular currencies are much better than cryptocurrencies.But then for some people specially to those who experienced to use cryptocurrencies are much better than regular currencies.It is because people has there own choice.And for me, cryptocurrencies are much better than regular currencies for it was much secured than the other type of currency.