I have something to hide ????
I asked my local decorator to repaint the outside of my house (UK) and he quoted £400 which is the market rate for this area but he could do it for £330 cash. Now I know he isn't declaring this to the tax man but I'd much prefer to pay the lower amount.
With a cashless society you are at the mercy of the banks. They can quite easily put up their transaction charges to the retailer which in turn will push up the cost of goods.
I prefer cash, it's tangible, I know how much I have to spend because it's in my wallet rather than a number in my bank account.