1. Streaming is instant—regardless of how huge the music or video file is, streaming material begins to play very instantaneously. There's no need to wait for it to download fully.
2. Streaming does not need the use of storage space. Unlike downloading programs and having enough capacity to keep them, you don't need a huge hard drive to contain the stuff you want to watch or listen to.
3. Most streaming applications allow you to pick what you want to watch or listen to, so you don't have to stick to a cable or radio schedule.