I assume that people who don't get shown my updates are the ones that actually weren't interested
I think most of the people who don't see my posts assume it's because I haven't posted
This misconception has caused problems at least once
I have paid Facebook to promote a post at least once
I don't have a Facebook account, but I used to.
I have never had a Facebook account.
ETA: I'd be interested to hear what the problems caused by the misconceptions were.