Board Thread:Questions and Answers/@comment-25979267-20150106215457/@comment-21547349-20150821065657

Adding facebook allows for more advertising possibilities and spreading the game to more players. Uploading a picture does not. There is no benefit to the developers spending time implementing a feature like that.

I won't link MSM to facebook as I don't want the game to spam my friends and family, who won't be interested in the game.

You could just set up a facebook account with nonsense information so you can upload a picture. Link to the pretend facebook and you are away. I might go do that now, thinking about it.