I’d like to be able to block & unblock my card as many times as I want.
The reason for this is simple: safety.
I travel a lot, and use the card online a lot too. Two factors that increase the chances of my card getting hacked.
My usage would be the following: always leave my card blocked unless I have to do a payment.
Note: A few months back, there was a limit in the number of time one could block & unblock the card. If that has been changed, please do let me/us know!