A small niggle, because I see a lot of people say this: At least in the US, many banks do extend the same protections to both credit and debit cards. My wife and I both had our debit card info stolen in separate hacks over the past few years, and both times our respective banks just asked us a few questions, credited the money back to our accounts and sent a new card that automatically replaced the old card upon activation.

Credit cards can cost more for merchants to process, sometimes they pass this cost onto the consumer with a credit card surcharge.

It's also easier to track your spending on a debit card as you can check the remaining balance at any ATM rather than waiting for the bill or going online.

But I mean, in the context of accepting payments online, debit cards aren't really an alternative to credit cards, are they? The two go hand-in-hand. Merchants that accept credit generally accept debit, so you're fine in that situation if you prefer debit.