Databases can do things with data that other programs simply cannot.
Do you have a list of clients, and want to know how many that are in California have ordered at least $200 worth of services in October?
Do you need to print a report on the number of cheap products sold in the last quarter, broken down by client, and sorted alphabetically?
Wouldn't it be nice to be able to do things like that with a few clicks of a button? That is where Access comes in.