I don't have a problem with people who believe in all this stuff, but I find it a bit sad, because in virtually all cases they are just "un-enlightened".
Worse is when people take advantage of this naivety.
The problem is in order to understand things, you have to be able to find the truth from all the bunkum.
Although science gets a poor press at times, the central core value is about truth, and truth at any cost, including dismantling of old "truths".
However, it has to be done with rigour, or else you can be fooled by pseudo-science.
Contrary to what most people think, science is a kind of religion. True science is about theory, prediction, measurement, proof, but it also relies on a belief that previous science is also probably the truth.
An individual cannot start from scratch and learn everthing about science, we have to "stand on the shoulders of giants" to realise the next truths from previous ones.
A great deal of the "supernatural" occurances can be explained away, sometimes with very recent discoveries.
People on this site should not be surprised at this.
Our brain has a model of the universe that is very easily tricked or misled, and we can swear blind that what we are experiencing is "real".
In many senses it is real.
Garlic will work to ward off "real" (dream) demons if you believe it.
As to the more rational explanations of supernatural events, take the latest findings just last week about how scientists have been able to create the feeling of a presence in the room. It's a bit like the mind being fooled that the senses we receive are actually displaced from the body and so seem to be coming from another body.
Take the discovery that infrasonics (very low frequency sound waves) can set up standing waves that give the feeling of a ghostly presence.
I'm not saying that ALL supernatural occurances must be false - that is not the true scientific way either (although some scientists do have rather closed minds), but we also need to be wary of the charlatans out there.
James Randi is the ultimate skeptic. He still has $1M available to anyone who can prove a supernatural effect.
The Million Dollar Challenge - JREF
If your answer is "I can't prove it, but I know it's real", change that to "I believe it's real". If that's what you want, fine, but you are in danger of building a castle on sand with that approach.
Another "supernatural" effect is that of placebo.
The mind is quite capable of creating real symptoms on the basis of suggestion.
An explanation for real symptoms could be a form of somnabulism (sleepwalking), where marks or bruises could be as the result of real impact damage, in a dream by some entity, but for real by some other means.
I like to try and keep an open mind that there is PROBABLY a more rational explanation for things, but also that there MIGHT be something new and undiscovered going on.
I like to call it "gentle skeptisism".