Totally with you about how awesome wasps are, and I agree surely mozzies have their cool looking examples and also are food for a bunch of other animals.
But I can totally understand the hate for mosquitoes. They are annoying, and sting, and the stings are itchy. And that's not limited to A. aegypti...

My list is very subjective.
Cockroaches (pest) is my N.1 on the list
N.2 Ticks!!! The fuckers rain from the trees and latch onto you!!!
N.3 is shared by parasites, any worms, lice, fleas, you name it;
N4. Leeches. Because fuck leeches. They are slow, yet they will still get you, and unless you have coated yourself in DEET they will bite you, and the bite will bleed for a while, and if you are like me you may get an allergic reaction.
Anything that can be reasonably warded off with regular repellent and/or window screens gets a pardon from me.