Laziness.

More often than not, I sit on my bed to do my homework.  And more often than not, I have papers and waterbottles and such that I discover that are garbage.  Unfortunately, my trash can is 4 feet away from my bed, and I am far to lazy to actually stand up to throw stuff away.  So, I wip out my Jimmer skills and toss them all precisely into the trash can.  Then after I have completed my homework, when the floor around my trash can is newly decorated, I pick it all up at once.  It just makes my life much more enjoyable.