Yesterday I was working on a project and thought I was within that specific site when I wanted to delete it, but accidently deleted the main site of the Farm. Today I went into SPD and found that there are sub sites of the main site that are still available. Couldn't I just re-create the main site and have the sub sites pointing to the main site? There are no backups. :( BUT I did go through the database yesterday and noticed all of the lists, pages, etc. still reside there! Is this possible or is it more complicated than this?
Sounds like you deleted the top-level site collection in your web application. I believe if you delete the top-level site of a site collection, SharePoint automatically deletes the Site Collection. No - without a backup, there is now way to recover site or site collection deletions without a backup of your SQL database OR a backup of the specific site collection.