Hey @steevc!
I regret that there are still instances where someone would need cash, or where cash would be the most useful system of payment, but I also see those days vastly diminishing.
Things like the Bitwala card of Shift card are an unfortunate necessity that will soon be transcended.
Decentralized currency is the best option, and people are flocking to them like mad right now.
There's hardly anyone that I know who doesn't know about Bitcoin before I ask them about it.
The tide is shifting. The pendulum is beginning to swing back in our direction.
I see a bright future :D
I can't see cash dying out too soon. It's handy and pretty anonymous