Do you use cash/have you increased your cash usage out of privacy concern
I originally did it for privacy reasons:
1.) No one can judge me for what I buy.
(Ex: OP goes to bars too often. No new liver for him!)
2.) I don't generate a giant list of establishments I frequent.
Ex: I want to harass OP - looks like his favorite cafe is at $ADDRESS.
But I had an interesting side effect - looking at cold hard cash makes me less frivolous with it. The money I make from my frugality exceeds what I'd get from credit card rewards.
I often see articles about societies going "cashless" on HN, and I thought it would be interesting to hear from HN users who are going in the opposite direction.