Sometimes you have to "view" the question in order to see the entire thing.
Sometimes you realize the existing answers already provide an answer and there is nothing to add.
Sometimes you just want to keep up with what people are talking about or see an answer one of your friends (or enemies) has given.
Each time someone opens a question, it shows as "viewed," regardless of the motivation for opening it.
Thus, if I submit my answer and then realize I left something out or made a typo and I wish to correct it, my doing so will add another count to the views.