What's On Your Desktop?

When you have 8 hours of lecture everyday, your mind tends to wander. I thought about a lot of things other than the difference between apoptosis and necrosis. But mainly I just looked at other people when I came upon this strange image. The person in front of me was surfing the internet when his desktop appeared and it was a picture of himself. There's no Grand Canyon, family, friends, or even the Mona Lisa. It's a picture of him in his room and probably taken by himself. Sure, I occasionally put a picture of Aegean and me on my desktop, sometimes a nice art piece, but I have never put just a picture of myself. Do I need to remind myself of what I look like, if that mirror stopped working? Do I want others to see my picture on a computer, if my real face wasn't good enough? Am I narcissistic beyond belief? I'd like to ask this person what's the goal of putting his face on his desktop because I don't understand.