I think there is pretty simple answer on this question, people can have a bit more freedom of choice with btc. I don't wish to go too far in my imagination, but lets say for example that bitcoin became mainstream. In that moment we can compare btc and dollar. Now its too foolish to do it, cause just take a look in years of existence. Dollar is hear for years and years, bitcoin is just a little baby for dollar.

Advantages for people outside US and EU are awesome. Now I can buy things and gamble with bitcoins easily. Easy payments, depositing, witdrawing.. Before it was hard with banks, and sites that doesn't accept all countries.

Future will tell will people realize how much btc have to offer to the world.