We do not respect and honor our parents because we have not disagreed with them in the past or in the present. We do not respect and honor them because they have been perfect in their behaviors as parents and human beings. We respect and honor them simply for the reason that we are their children and they are our parents. Asking beyond that will be in the realms of graces from God, which are way beyond our control. We simply have to thank them for making our existence possible, and for allowing us to even know the difference.