I can see both sides of the fence on this one. Personally I am a nosey person that likes to know whats going on. Not intimate detail, but a grasp on whats happening around me.
Trips to Purley Cross to see the effects of the flooding etc have been known.

While a picture is not required, as the pics I took (and were shared) of the incident at the All In One, the old adage that a picture speaks a thousand words, goes a long way to explaining why we use them for things like this.

The picture alone in response to a question of 'why was the road close' speaks volumes, and explains it well. So there is an advantage to them, when taken sympathetically to those involved.

The question of road closures is a complex one, and involves both criminal / evidence reasons, as well as good old Elf and Safety. having been caught up in a number of nasty incidents I can appreciate most of the reasons used to keep a road closed for extended periods of time.