Because the process enables you to clearly identify your priorities and focus your resources on achieving your objectives.
To attain your goals, you need to know where you stand today, where you want to be in the future and how you’re going to get there. For example: what will your retirement look like? What is it you want to do in this next stage of life? How will you spend your time? Where will you live? Do you want to travel?
And, most importantly, how are you going to pay for all of this?