I want the ring because I love Halo; it is the first and only game I've played more than once on Xbox Live, it's helped me meet some new friends and bond with old ones, but I really want it because it looks just plain cool.
My best friend, who helped me through a long unemployment and is a Halo addict, totally deserves this pimp-tastic ring as thanks for being a good human being.
I want it because i have invested literally months of playtime into the halo series, and i am an enormous fan and have put so much money into the franchise. And I could punch someone in the face and leave a master chief face imprinted onto their face.