Bitcoin has all the advantages of digital cash and allows one to be in control of their money. Although involves taking security precautions, it's what makes it such a good currency for the future.
Yes the advantages of bitcoin makes it most suitable and flexible payment system for almost all the sectors.
The gambling and porn industries growth are few example, how bitcoin contributed to those sector's development.
As quoted it has got more advantageous part. If it has got the physical form it could have been used by lots of users than the present. In my opinion it has got the acceptance over most countries. This would probably support bitcoin to grow to be the future currency.