I only use CC, to earn airline points (based in Sweden). But I always pay the entire amount due at the end of the interest-free period, so I never pay interest.
I also like the fact that using a CC comes with better buyer protection than debit cards.
If one is capable of managing one's finances (and paying the card off in full every month), credit cards are a useful tool. They're a problem if one can't manage one's finances.
I also like the fact that using a CC comes with better buyer protection than debit cards.