Its because Facebook can't afford to not show you an ad. So, when no one specific is paying them, you get lowest-common-denominatored.
It would be interesting to collect ad statistics from a broad range of Facebook accounts to see what they do get shown, since it would speak volumes about who's actually paying them.
It would be interesting to collect ad statistics from a broad range of Facebook accounts to see what they do get shown, since it would speak volumes about who's actually paying them.