Others must be doing the same
Scattered about, in this drawer and that one, are a great many of those simulacra of credit cards, enough to make quite a stack. Nobody's been throwing them out, and they now make quite a collection of phony MasterCard, VISA, and Discovery cards, plus green, gold, and platinum American Express cards. There are GEICO promotion cards of the same size, also, along with cards to be presented for discounts at various establishments. Since they take up so little space, they're not going to be trashed this time around. Somewhere there's someone building a giant collection of these things.