Arguments, especially political ones, can get somewhat heated... It's always tempting to think of the other side as stupid because they can't understand your point of view. And if they're stupid, maybe we would be better letting the political elite decide? This may be one of the deep seated rationals behind opposition to Interactive Democracy.
Perhaps it takes a leap of faith to think "Well, maybe the opposition have other values, experiences and information, that I don't have. Maybe, they're not stupid after all!"
And maybe those "stupid" people, who may have a far lower IQ than you, suddenly say something true that you hadn't spotted before.