[axaxs]

I see your point, but from my perspective it means little. There will only in history be x number of hairs on my head, but that doesn't make them worth anything.

[mcantelon]

You hairs lack the ability to be transfered quickly and globally and it wouldn't be hard to find hair of a similar color one could substitute for it.

[acchow]

Your hair can be easily counterfeited (it is prohibitively expensive to invalidate a fake). Your hair cannot be used as currency; bitcoin can.