...is that they are incompetent gits.
I may be a messy person, but I am an organized messy person.
I know where everything is within the confines of my mess.
I have stacks of paper and piles of books everywhere but I know which books are where and what is hidden beneath each stack of paper. Honestly, the supposed mess stimulates my mind. It's hard to work in a completely bare environment.
But moving onward: I dislike it when people are incompetent, disorganized problem-solvers who are unable to assign tasks in a meaningful and effective manner. And who don't take responsibility for their own mistakes. Basically, people who do not have a neat mind.
I may live in chaos but when it comes to getting things done, my mind is tidy.
Basically, I hate incompetence.
End of rant.