[Karlozkiller]

And the inevitable rise in wireless card skimming that would ensue?

OK maybe not inevitable but it's made a lot easier with wireless cards etc. And I do expect 'thugs' to catch on.

Plus, you can only do that on lower sums. If I pay a higher sum than allowed for wireless pay where I live (Sweden) I'd still need chip and pin, and often in restaurants I am told to enter the total sum plus whatever tip I want to give, then confirm, then enter pin.

So I'd say cash can be quicker in some cases, slower in other, but my main concern is in the area of privacy and security both of my cash, and my ability to pay in force majura-cases.