The uptime of cash in my wallet is pretty close to 100%. It's extremely rare that I have to use it, but it's incredibly convenient to have each time it's required
If you look at uptime as discrete set of events when you need to pay for something, my cash uptime is not looking great nowadays. "Sorry I can't break that" or machines accepting coins which you don't have at hand. Just to be clear I despise CC companies the system is broken in many ways.
You are aware that many places don't accept cash, right?
> it's incredibly convenient to have each time it's required
Sadly there is an increasing preponderance on the part of retailers to do one of two things:
The only people remaining who will almost kiss you for offering cash instead of card are taxi drivers.