I believe that much of what we see regarding hauntings, ghost, etc. is falsified and exagerated. Just as much of what we see as 'supernatural,' is also falsified and exagerated.
You 'believe'? And it is exaggerated btw, two G's (If you use Firefox it spell checks on the fly for you).
Falsified is a bit extreme IMHO. That implies motive. Over the history of the human race there is a wealth of evidence, cross culture, of contact in some form or other with those who have passed on in physical form.
The more we learn of the universe the more we realize we don't know. Take the whole 'ether' argument early last century. That has now become a discussion of Dark Matter and the like. We still cannot see it, yet we have mathematical models of it (now supported by the Hubble) which point to the existence of such materials existing and having an influence on the physics of space (beyond our current understanding of gravity and how galaxies are formed/speeding away).
Why ignore the direct experiences of so many over time if not to ignore a truth we may not like? We investigate based on evidence we gather (as well as hypothesis developed based on logic/experience). To ignore the evidence is to bury one's head in the sand. And why would one do so?
It reminds me of folks who blast fundies for ditching evidence of an older earth because they don't like what it means to their own personal view. My view is to keep an open mind, look at the evidence, and keep plugging away to learn more.
I don't have all the answers, I don't think the bible can give me all the answers either, nor can science at this point as we keep needing to build better instruments to probe into things (and there is a new telescope that will replace hubble launching soon - will orbit far away from earth and give us a better view of the universe).
So let's just ask it like this: If you could find what you consider proof of people existing beyond this physical form - what would that mean to you and your beliefs? How would it affect how you see things?
An open mind is important, as Einstein once said 'Imagination is more important than knowledge' and I think he hit the nail on the head with that. Our imagination has been one of the things that keep moving us forward. "Such and such is not possible" has been proven wrong time and time again.
Newton would be amazed at Quantum physics and our modern day inventions, etc. It took people making a leap a faith (at times) to help science progress to where it is now.
I think your own biases and ideals are showing through here. If you cannot explain it, it does not exist. If it does not fit into your model of the universe, it does not exist.
Certainly computers and the internet could not exist, because people back in 1200 did not believe they could. Not to mention cell phones, tv, etc.
If you don't look, you will not find.