Whatever happened to the C.O.D option?

Aside from the obvious danger to the delivery person delivering a C.O.D.   How did the modern world put an end to the C.O.D?  Whatever happened to the world that allowed people to write a check or pay cash at their front door when a product was delivered.  You can pay cash for a pizza but Amazon, Ebay, and just about every online retailer as been enchanted by the wicked spell cast by PayPal's paranoid influence on commerce.  PayPal making demons look saintly since 1998.