Eww desks, I lie back with it on my lap, I have a burn mark on my leg to prove it. Anyway I need a laptop and here's why:
I move around my house alot - Kitchen webchatting with friends while I make food, Downstairs when a friend is over (Every other day) so they can play the Xbox, Upstairs in my room when I am alone/A friend wants to use my desktop computer (Which kicks some ass, Plays CrCIA on high at 25 fps) computer and in my dad's room when I am bored and want to talk to him but still play games.
My mom lives in Arizona and I take a plane there every time I go (Except for Summer) I can't fit a huge computer on a plane.
I go to friend's houses with my computer about 3 times a month.