"No proper evidence"?
Do you have any "proper evidence" showing that thier not?
Well the belief in ghosts is a tradition based on superstition and paranoia. What reliable proof is there? None at all.
Ghosts were thought up millenia ago to explain what happened after death, when there was a lack of scientific understanding in the world. Lets think about this for a minute, we KNOW we are alive because of our brain activity, we can think for ourselves because this gives us conciousness. When we die our brain fails and will no longer function, so how can this conciousness and reaction still survive without the brain? (don't say it's your soul.. because that argument lacks evidence and common sense as well ¬_¬)
Also BILLIONS of people have died throughout the universes existence, a couple of sightings of individuals does not seem like a reasonable proportion of the 'dead community'.
Photographs of 'ghosts' are highly contradictory or easily debunked - ranging from which are very often camera flares, smudges and ripples on glass, reflections, to people dressed up and or those who happened to get into a camera shot with the subjects not knowing. The evidence of ghosts almost completely come down to film evidence, which are very often misenterpreted, or many which are admittedly staged.
Mediums and those whom contact the dead are very often fraudsters and work in by 'hot/cold reading' to draw out the person into belief they are making contact. The same applies for a ouji board - where ghostly communication comes from subconcious movements. For more in depth explanations look into the Seance that Derren Brown recreated.
How about ghosts in clothing? How can non living items pass into the afterlife and exist as whatever a ghost is meant to be (a gas?).
'Feelings' of ghosts can very often be explained by solar activty, lack of oxygen, magnetic distortions and classic paranoia. A controlled experiment involved the public being told a normal house was haunted, after which ghostly reports increased in the building by 500%, where every noise was 'evidence' of the ghosts.
I could go on for quite a while... But lack of faith all comes down to common sense.
Now lets take your examples briefly, I have never had a 'paranormal' experience, becuase I don't believe in them. There are probably a number of logical reasons that could explain your experiences. With time comes memory loss of detail, repitition of the story always leads to subtle changes and exagerrations until eventually comes a point when it can only be explained by something beyond normal.
Now what evidence do you have to PROVE the existence of ghosts?
There is no proof (or disproof) for the FLying Spaghetti Monster but lots of logical reasons why you wouldn't believe in it, ghosts are no different.
PWNT