Accordingly to ukfinance.org[0] 13% of card transactions are CC and the rest are debit. I'm surprised it's that high for CC, but still, I think it's reasonable to say a lot of people use them.

Er yes, you're right about debit card cloning I think. I'll retract that one :) However if purchase something that doesn't work your CC company is jointly liable (crazily enough) and if your card details leak you have protection against fake purchases. Neither is the case for debit card use.

[0] https://www.ukfinance.org.uk/data-and-research/data/card-spe...