Can't stand stupid people

This week, our assignment is to write an essay about what pleases us and what gives us an uncomfortable feeling in the play of Othello. For me, Iago's whole scheme is really bothersome and I truly cannot comprehend what he must have been going through his mind in order to drive another person to insanity. What really bothers me though, is the fact that both Othello and Desdemona were so stupid throughout the play. How can they be so completely oblivious to what is going on around them? I honestly don't understand how people can be so naive to the world around them. Is anyone else bothered by their stupidity, or is it just me???