Bitcoin is a peer-to-peer system without a central, government hub. Therefore, it has caught the attention of people who distrust their governments. Unlike traditional currencies, Bitcoin is immune to manipulation by unscrupulous governments.
In countries with unstable currencies, bitcoins may be a comparatively safe place to store ones money.
For more businesses accepting Bitcoin, you can search for online and brick and mortar businesses that accept Bitcoin. You can find businesses anywhere in the world by category.
With enough adoption, Bitcoin could become the preferred currency for global travelers.