Chargebacks atleast exist in NZ - this is what I mainly use credit cards for - if the company goes bust before delivering (or before you take a holiday etc), or the product isn't as described, or the company starts quibling about their unconditional money-back guarantee - the credit card company will pay (by law)
That's my main reason for never using my debit and always using a credit card, to offset the risk of fraud.
It seems like a few of them have some perks like travel insurance, cashback or airpoints/reward points, but most of them have no or very tiny perks on their cards. A lot of the airpoints are also locked behind a minimum spend in the first 3 months.
For me personally even the "good" cards aren't that great because I just don't spend that much money. Though travel insurance would be nice once the world opens back up.
Chargebacks are useful depending on consumer protection laws. I'd guess in NZ they're less useful like here in Aus, but if you buy from foreign companies it can be a useful stick to wield as otherwise you'd have little legal recourse.
I've got reasonable travel insurance protections when I pay with the CC, I get airpoints, and some chargeback options, as well as fraud detection. Additionally, it's been easier and more reliable to set up online payments with a credit card.
The first 3 don't really seem to exist in relation to CCs in NZ, and wanting/needing to do a chargeback seems unlikely.
There are probably mild benefits to me having a CC over a debit card in NZ, but it doesn't seem to be anything like the US.