Bitcoin is not limited to be used as currency but also can be used as investment, as a currency Bitcoin can be used as global currency it will make the transactions easier and then Bitcoin also can provide a new job opportunities and new business opportunities
For countries that accepts bitcoin, it really can help a lot the community. By means of joining in this forum and ranked up,(jr.member up) the user have an opportunity to join in a bounty campaign and get paid. And because of that, bitcoin serves as a source of income for those who doesn't have a job.