Being able to not only visit a country as a tourist but spend time living in it, diving into the culture, and living day to day life in a place that is so vastly different from anything I know at home is possibly one of the most exciting and rewarding experiences I could ask for at this point in my life.
As you travel and move you meet friends from all around the globe. You meet people you would never have the opportunity to meet in your small town back home. You meet people you may not normally be friends with in "normal" circumstances, but find out that they may quickly become your closest friend in this foreign place. Being alone in a new culture forces you to be both independent and forward. Meeting friends in foreign cities can be a challenge at times and can revert you back to your primary school days where walking up to someone and saying "Can I be your friend?" is totally acceptable (and welcomed!).