There are very convenient to use if you want easy access to your money. But to me that defeat the ideas of keeping my coins for long term since I got tempted to use those cards when am I need.
But isn't it good to use them instead of just keeping?
I see cards as an intermediary solution, cards and ATMs are the interfaces people already know and may bring more users to crypto, but the ideal solution would be to replace them and avoid those companies fees.