Where are your customers in the world? Many non-US countries have little/no credit card presence, so if you don't have an international-friendly payment option like PayPal your customers may be using "gift card credit cards" purchased from a store. It's easier to do this once a year than once a month. Ultimately though, talk to your users! That's how you'll find out.
> Many non-US countries have little/no credit card presence Was that statement accidental horrible wording or did you actually mean it ? If the latter, then you must be one of those many Americans that needs to travel more. The rest of the world are not neanderthals who've never heard of credit cards. Go to Kenya (Africa) and the only reason you might struggle to pay by credit card is if the merchant has decided to p…
It didn't imply that other countries are backwards, or that their people are "neanderthals who've never heard of credit cards."
It's a fact that credit cards simply aren't equally popular in all parts of the world and naturally this is something that must be taken into account.
This includes places that are arguably more advanced than the US. Of which there are many many many many.