So, you're a teacher.
Writing objectives is important to you because:
it's becoming a standard for certification criteria in most states
objectives provide a plan for what you need to teach
objectives provide a focus for developing the instructional strategy
objectives help direct the learner's attention to what will be expected of him/her
objectives provide the foundation for assessing the learner's knowledge, skills, or performance
objectives provide criteria for measuring the effectiveness of the entire instructional application