With any business, you need to know how you are spending your money not only in the past but for the future outlay. The same is true for a healthy website, knowledge of how clients use your site, where they enter and where they exit is vital for you to see if money has been well spent on features and to plan for new and improved development.
Good analytics will repay the cost of its preparation many times over stopping you from wasting precious time creating features that users will not use.
Accurate reports let you concentrate your resources where they are most needed. Targeting your resources to bring you the maximum return on your investment .