Back in the 70s and early 80s, i remember hearing stories about Poltergeists shoving around furniture and throwing pots and pans around the kitchen but for some reason they all seem to have gone into the light or whatever poltergeists do because we haven't heard of a poltergeist or any decent ghost story for years.
Considering that almost everyone has a mobile phone with a camera attached, you would have thought that if there were spirits and things hanging around with us, someone would have captured a convincing image by now but if anything ghost sightings have gone down.
Come to think of it, alien abductions and exorcism stories have also taken a nosedive and i haven't read about a demonic possession for a long time.
My guess would be that as the 70s produced such films as Poltergeist and The Exorcist, more people put the picture falling off the wall down to malevolent spirits and less to their own dodgy DIY skills and shows like the X-Files made us think any light in the sky was invading Martians armed with anal probes.
Of course there are no such things as ghosts and i know that and when things went bump in the night or the bedroom door was being scratched at, we just blamed Molly, the family dog.
I do admit though that although she died 3 years ago, the scratches in the bedroom door look remarkably new and i am sure there are more than there used to be.