Why is it important to reach your goal?
we need to reach our goal so that, if one day when we need a job, we can easily get one immediately.
I think you question really is "why is Bodhi important in Buddhism". Bodhi is the word for enlightenment in Pali and Sanskrit. Bodhi is the goal of Buddhism. To reach that state in which we can see clearly and understand the universe, our place in it and how it all is interconnected is a Buddhist's goal.