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.
Yes definetly that cryptocurriencies is better than regular currency,in terms of comparison of value,and fast and reliable transaction in other kind of payments or buying other kind of item,unlike in regular currency you always bring money to buy those item you want or used as payments in billing.cryptocurrency is big advantage because in simple one touch of your phone you can pay bill or can buy those you want and no hazzle.