First, I do use cash..kind of weird to act like cash is an edge case. Second, how is your information private if an intermediary or intermediaries knows what yo

First, I do use cash..kind of weird to act like cash is an edge case. Second, how is your information private if an intermediary or intermediaries knows what you bought, when, and for how much? In some hypothetical world where PayPal, Mastercard, or Visa didn't immediately turn around a blab to everyone in sight what I just did, fine, but that's not remotely the world we live in.