Meanwhile on this same page, 2 users are talking about how they were hacked and lost 100ish BTCs between them. So yeah, there is that. We have magic internet money that everyone recommends not storing on the internet.
Offline storage is a very good idea for Savings wallets. The time delay saved me from getting scammed out of 1.75BTC (the scamer was promising a high price If I could sell more than I wanted to).
With credit cards, you have relatively low credit and daily transaction limits. with Bitcoin you can send millions of dollars of value around the world in minutes, while paying pennies in fees.
Credit cards
have to be reversible because they are vulnerable to the replay attack. Bitcoin
has to be irreversible because it is decentralized.