I chose mine because it was a good design and it was for low points. I hardly ever see anyone who has the same as mine. I think it also kind of shows I'm not some nerd who stays up on AG all night spamming game comments and rating games that I haven't played for points.
I'm not sure if I've given reason for this armatar, but i chose it because I've taken a liking to the insect armatars, or the armatars that look powerful.
Before I switched to the butterfly armatar, I gave my reason for the caterpillar armatar. As I said, it is logical to use the butterfly armatar after using the caterpillar armatar, so I did.