It is, but I typically only carry two - the 3% back and the grocery 6% back as the others are mainly online or automated.
> I carry exactly one debet card in my wallet (.eu) and use it for everything
Not sure about eu but in the US that's generally not advised, due to the semantics of how the cards work and legal fraud liabilities.
Basically, if someone skims your debit card, they take your money and you have to sometimes fight to get it back - but still, you are without the money for a time. If someone skims your credit card, they're stealing from the bank, and for obvious reasons they seem much more eager to investigate - but you still have your money.
I only ever use debit cards these days when I need cash from the ATM.
Here it's about the same. Even with a skimmed credit card you're on the hook for the bill, there's no chargeback. But skimming is really rare because we no longer have the old insecure systems of card imprinting, signature, magstripes etc. It's all chip&pin or contactless.
I don't think anyone I know uses a credit card for daily purchases here in Spain.
Skimming is rare in the US too, as tap to pay is at 90% of payment terminals, and chip reading is at 99% of payment terminals (guesstimates based on the last time I swiped my card).
I've had this happen to me and the bank in question asked me a couple of questions about where it happened (an ATM in a really dark location!) but quickly reversed the charges. Happened in London, so was OS to boot.
That was a few years ago don't know if its different now.
> I carry exactly one debet card in my wallet (.eu) and use it for everything
Not sure about eu but in the US that's generally not advised, due to the semantics of how the cards work and legal fraud liabilities. Basically, if someone skims your debit card, they take your money and you have to sometimes fight to get it back - but still, you are without the money for a time. If someone skims your credit card, they're stealing from the bank, and for obvious reasons they seem much more eager to investigate - but you still have your money.
I only ever use debit cards these days when I need cash from the ATM.