Early Morning Surprise

From the corner of the room, a scratching. Like a mouse or rat, quitely walking past or across a piece of cardboard, their nails with the pressure of their small bodies descretely sliding over the smooth surface. That quiet scratching normally would not be heard. But because it is four in the morning and no one else is up but me because I have a calc. test today, I can hear it.
And I think it is a mouse, which is slightly disturbing in its own right, but I also think that it is in the attic or something. Somewhere where I won't have to actually see the creature, or deal with it. So because it doesn't seem like a serious threat to me, I try to ignore it, and then the sound stopped. But then it returns, only upped by two or three notches of volume, and I know that whatever it is, it is in my room, behind some pieces of cardstock (which had been pieces of art carefully crafted more than two years ago in foundation art) in the corner between my dresser and the hot-pink wall.
Really hoping not to find anything at all but afraid and almost sure that I will, I stand atop my chair, cautiously peering over the art into the dark gap between it and the wall. Two long antennae (maybe three inches) slowly and methodically wave to greet my gaze. A roach. A huge cockroach. It is crawling up the back of my art and now stops to rest near the top, so that the top of it's head, the two front legs, and the antennae can be seen. I cringe. At the thought that this roach has invaded my space, and that now it is coming out of wherever it had been hiding, and could now start flying around the room, landing all over everything, getting lost and impossible to kill, or just start antagonizing me. I hate roaches. I realize that they will not do me much harm, but something about them, is just so.... disgusting. the way their antennae twitch, the strange texture of their wings - shiny but almost veiny, and crunchy if you were to break it - and their legs with the little hairs on them, and their plump but thin and fragile bodies beneath the wings, and all the beginnings of the legs beneath the body, and how if any part of the body besides the wings get dismembered, they continue to twitch anyway..... disgusting.
I wonder what would happen if all the roaches in the world were to die. Or simply disappear from the face of the earth. Because sometimes, when I am being selfish and hating the roaches in their grossness and the way that they're not actually afraid of you and will run straight for you after you've tried to kill them with Code 3 or Raid, I wish that that would actually happen.