Laptops are tempting targets for thieves.
Some estimates claim that as many as one in ten laptops will be stolen. This isn't altogether surprising. After all, laptops are portable, easy to conceal, and can be quite valuable.
They also often contain sensitive information.
Encryption provides an additional level of protection to help safeguard your private data, so that even if your laptop is stolen the thief will not have easy access to information that could make the theft of your laptop much, much worse than simply lost hardware.