cash-less means we are going to move on to digital form instead. what we use is not going to change, but only the shape of it. in other words we will still be using the same fiat that we have used for hundreds of years but now with credit cards, with our cell phones, with cryptocurrencies which are centralized and issued by the government and represent the same fiat.
At least OP is right that we probably won't use paper cash by that time.
The death of cash is the result of a plan to cede control of money
away from the banks and governments, and place it instead in the
hands of the new players:
tech companies.
They won't succeed in that plan since banks and government will try their best to have control over fiat currencies. Although that is the case, you are right that tech companies are the ones who will have more authority in a world where digital cash is used.
SPENDING CAUSES ACTUAL PAIN.
When we pay with cash, neural pathways light up like a Christmas tree.
So in creating a payment system that eradicates cash,
we eliminate neural pain the flinch moment
and open the brain to limitless spending.
Oh really? I think that will not open the brain to limitless spending(since it is still hard to earn money).
".. Back at MIT, Drezen Prelec`s research into the neural pain of cash should have served as a warning that we were about to enter a fathomless, glittering new world of untethered online spending. Instead, his work unwittingly signed the death warrant on cash. Cash, he says, is the one thing that firmly tethers us to spending within our means. "You want to know how out of kilter we are with our spending?" he tells me when we meet. "Try using only cash for one week. Buy everything with it. Pay your mortgage with it. Look at a thousand dollars as a mountain of cash. You will never treat money the same way again."