You deserve the downvote you got because you either lie, or need something bigger than the downvote you got in order to start thinking properly.
Facebook is one of the worst websites and means of media in terms of freedom or any semblance of fairness.
In Steemit your posts are immutable once posted, and no one can delete them from the database.
This is in fact one of the things that must be changed in order for this platform to survive long-term.
Spam must not be perpetuated, or it will drag along the entire platform down the gutter.