Bitcoin could be useful in allowing direct transfers from user to user but for such a feature to be utilized there would need to be basic infrastructure like electricity and internet. If third world countries start having those then there could be a leapfrog to bitcoin.
Bitcoin helps the community by providing an alternative job for those who does't have a real job for them to become financially confident and stable. They can use the earning in bitcoin in their everyday living. Thus, bitcoin really helps a lot in the community.