I don't carry much cash.
I use credit cards a lot. Some people say that they don't trust credit cards, or that they would spend more money as they are too easy to use.
For me, spending money with cash or with credit cards is the same. I don't buy what I don't need.
While traveling in Shikoku, I find that many places accept only cash. I had to stop at an ATM and get some cash.
If they want to have more foreign tourists, they should consider accepting credit cards more, I thought.