I dislike going out

I only go to school, and on sat-sundays I stay home.
What is this disease called?

Sometimes its realy nice outside, and I kind of wish I had a reason to go outside. But then I just open a window and play videogames.

For someone who hates sports - and lives in an apartment that lacks a porch or balcony to sit on playing DS - wtf IS there to do outside? Other than walk, which I do anyway because I don't have a car.