Yes, for quite some time, once you had a Facebook account, it wasn't going anywhere. Now, fortunately for college students and people with no attention span everywhere, Facebook now allows said people to delete their Facebook accounts. This was in direct response to user complaints about not being able to delete their accounts, if desired. Even if users were able to delete their own accounts, there were no obvious directions on how to do that. Another reason that Facebook decided to allow users to delete their accounts was a reason that could have gotten Facebook sued if they did not address it: privacy. The "I didn't actually make a Facebook" E-mails were really racking up in Facebook's inbox, and Facebook sometimes made it all too easy for people to research intimate/private/personal details of users' lives. At this point, deleting your account is just a help-page away. Facebook admins are considering adding a "delete account" button.
Source: The Inquirer