I think you're very far from presenting a cogent debate position.
You also haven't offered what the alternative should be: Back to the gold standard? barter?
Here's what the new system offers: efficiency. I don't like shopping. It's a necessary evil. I like grocery shopping when on vacation. But that's the only kind of shopping I truly enjoy. Otherwise, I want to get in, get my stuff, and get out just as fast and quietly as possible. If I can walk into a store, pick up my widget, self check out in 30 seconds and leave the store without interacting with another person, that's a win.
So I prefer the way commerce works today compared to carbon paper, personal checks, and clerks who can't make change.