Another frequent question that have been asked in this forum maybe a hundred times.
Just an advise before posting a question, you could use the box in the upper right hand corner to search topics that you may want to ask. If you can't find some answer after several scrolls and reading by then you could post a question.
The number one advantage for me is the cut cost, bitcoins allows people to send money across the world without the need of a pile up paper works and payments.