Your Web site can be used for a large number of tasks such as:
Making public announcements

Providing support to your customers

Receiving feedback from your visitors

Sharing/distributing files and images

And, of course, selling your products

Those might not sound impressive, but don't forget that you'll be able to do those things for people around the world at any time of day or night. You have the potential to become a house-hold name 10,000 miles away.