It saves time. You won't have to check multiple blogs each day to see if they've added new posts.
You won't miss any updates. It's easy to miss some posts if you don't visit Chillazo very often. When you subscribe to Chillazo, every single one of its posts is sent to your RSS reader. Even if you don't check your reader for a week, the posts you haven't read will still be there waiting for you.
It creates a feed of stories interesting to you. You'll be able to read posts on many topics and from various blogs, all in one place. It's like having a newspaper written just for you. Many RSS readers even recommend blogs similar to the ones you subscribe to so you'll always have something to read.