At the time I was playing Devil May Cry 4 and watching Death Note. I was playing on Dante Must Die mode, so I just put the two together, replacing Dante with Kira. I never really hated the character, I just thought it sounded cool. It does make some fans happy, and others fairly pissed. The brackets are just there to look cool, since it looked kinda plain on its own.
As for my avatar, it's from Ore no Imouto ga Konnani Kawaii Wake ga Nai. I found the .gif on a different site, and just added the star (Which is currently the March Mayhem Ms.) to it to make it look like she's shooting a beam from her eye, hence my custom title "Kira Beam"