1. First of all, Luna is so, very unique. That's a great quality to possess and I think that's why I love her so much, because she stands out.
2. Luna is a true Ravenclaw, underneath all that quirkiness, there is a layer of intelligence. She's the one who led Harry to the Grey Lady and she spoke the last words for Dobby.
3. No matter, how flawed u are, Luna will always see the good things about you.
4. Luna doesn't care what u think of her, she's different and proud of it. For example, she always wears her radijs earrings and Spectra-specs, and she doesn't care if it looks odd.