Even if you’re not part of the #DeleteFacebook movement, you can lean a hella lot about what Facebook knows about you by downloading your archive. It’s easy and will not impact your current membership status.
Just go to Settings, Manage Account and click on Edit. Scroll past the account deactivation details. At the bottom is “Download a copy of your Facebook data”. Click that and follow the instructions. It can take a while to compile all of it. When Facebook is ready, you’ll see the image above. The zip file could be large, so make sure you have the room to store it. Now you can open it up and find out what all the fuss is about.