Depends on the place. If it's some small bakery or something, I will ask them if they accept credit cards or any cashless options, and if they say cash only, I will leave. I want management to see that offering multiple payment options matters.

I always have cash on me, of course and there are places I need to use it, such as the cash-only discount drug stores, local clinics, etc. But most of my daily stuff can all be done with a credit card, smartphone, cashless, etc. Restaurants are a toss-up if you're not in big cities.