The premise of this thread is dependent on the inverse of the statistic you give above.
We know exactly how many bitcoins currently exist. Does anyone regularly calculate how many bitcoins DIDN'T trade over any given period of time. I'm sure may of your $1 million coins traded hands multiple times.
Compared to world's physical gold storage,
- The actual traded stock of bitcoins is larger
- The bitcoins traded change hands much more often
- Number of bitcoins is increasing at a larger annual rate.
So if you feel velocity is somehow a desirable characteristic for a backbone of a monetary system, at least with bitcoin you get much more of it compared to the current one.