Credit Cards are rather uncommon outside of Europe so you will be limiting yourself there, though Google Wallet also restricts themselves to CCs in my country.

Credit Cards are rather uncommon outside of Europe so you will be limiting yourself there, though Google Wallet also restricts themselves to CCs in my country. In fact, the only reason I now have a CC is because I wanted to sell on the play store and needed to pay a registration fee. I would not have acquired a CC (which has a recurring cost) just to pay for a service if that service wouldn't have paid me back.