Anything that exists on facebook is there to profit facebook not the user.
if facebook messenger exists, it is not to provide intimacy but for some reasons aligned with facebook interests such as getting the people online on facebook longer to peek further in their life and social links to feed the investor storytime narrative that facebook will collect more data to eventually be able to target people efficiently enough at some point in the future so that investor will make a big ROI.
Then again email vs instant messaging is an old debate and email does provide much better conversation and intimacy due to its asynchronous nature.
The user and I are referring to the difference in posting and discussing as a public post rather than talking through Messenger or email which is a more intimate service because its not broadcast publicly.
Not the information and data privacy behind what Facebook might do or not do with that information behind the scenes.
Lesson 3: You control the narrative completely in email which provides a much better opportunity for story-telling.
Facebook Messenger?
Facebook isn't just a place to post publicly on your wall. Arguably the reason why Facebook messenger exists on the platform is provide intimacy.