I had an unreal time, much like everyone else who took action on this once in a lifetime opportunity. The real question is not about if you should go but what you will do to develop while you're away. This experience will make you develop as a person, which can scare some people. That's why studying abroad only changes those who let it. Be brave and go kill it, the world is waiting for you.
Read Daniel's full report(.pdf) on his semester abroad to FHWien University of Applied Sciences in Vienna, Austria.