I know. But I also know people have all sorts of randoms in their friends list – even those they haven't met – and cannot bring themselves to delete (or even mute) them.
I muted someone a while ago and then found out that they had 'de-friended' me! Maybe we were thinking along the same lines as...
I used to be a pretty avid FB user, but not any more. My 'enjoyment' of it has been ruined by random ads every few posts, that I tend to just delete in the hope that they don't appear again. However, they just get replaced by other random ads!
On the flip side, I'm able to see through all that...