I use cash at the bar so I don't have to wait in line to cash out my tab.

I tip in cash so that people I'm tipping don't have to get taxed.

I use cash so that I can just slap it down and walk away instead of waiting for my transaction to go through.

I give homeless people cash (fuck the people who say that you should only give them food and that they will only use the money for drugs and booze. I give homeless people money so that they might have some chance of a small pleasure or succor in their otherwise horrible days, be it money for a hotel, a shower, drugs or booze these are all things that I enjoy why shouldn't they).

I use cash because I know that paying for my coffee with my card scrapes 5% of the merchant. I want to see the business I frequent stay around and prosper, it gives me more pleasure knowing that the bloodsucking credit companies don't get to buy another boat or mansion but the guy who owns the food cart gets to buy their kids something nice than the points off my coffee purchase ever will.

I use cash because I don't really want to expand their dossier of my consumption habits anymore than I have to.