Why does your desk have curtains?
As pudrums guessed, it is for cable management. It was supposed to be a temporary solution, but I just kept it. Right now I have my computer, an external HDD, a subwoofer, and all the wires behind that corner curtain because in my previous setup that's where my legs went (I sat in the corner). Even before that setup I used to have an Xbox, Mac Mini, Subwoofer, an external HDD, and a wireless router all standing vertically in front of the curtain with the wires behind it (that's why the rips are there). I suppose I could move the remaining items back out in front of the rips like they used to be. Should I?