The world is such an imperfect place, yet we still seek perfection everywhere and get very disappointed when we can't achieve it. Geometrical shapes are supposed to be perfect and flawless, so when you see a bit, or a part missing from it, you immediately get really annoyed with every aspect of it and wish you could fix it somehow.
If you happen to have OCD then you're in for a treat, which is why you should avoid staring at these cursed pictures at all cost. They will definitely make your blood boil and keep you annoyed for hours, or even longer.