If it's not cash it'll be something else. People need incentive to do things, especially truly horrible things. You think a sewer worker would do that job for free?

We'll we need some sort of currency to pay for the momey we spend with cards.

I'm sure it's possible, but I have my doubts of it working out well

some form currency will always be here to stay.

That like living in society with nothing holding any value.

Give me all your cash and then we will see.

Some already do

Yes we can

Many of us live in a braless society.

After society collapses and we return to the dark ages. :>

Yes if you are mindless drone who worships convenience and hates freedom and welcomes an out of control government to monitor your every financial transaction, just stop using cash. It is the easy "solution" to becoming a fascist police state. Enjoy being a slave to a technocracy, your mind will soon slow to a crawl. Keep letting a machine with a nefarious agenda control your life, it is freaking so much fun....

Some of us can and some of us can't.

We could but it is kinda shit