Poignancy over reality, yeah, everytime in cases like that. I don't believe in ghosts either, but I may be wrong and I'm open to that very very small possibility. Should you be afraid of the dark.. no, but be afraid of the possibilities that the dark creates, as that is when the bad, the nutty and the criminal come out and our main sense is impaired significantly.
I'm one of the most rational people alive, and have used those skills to investigate scenes and incidents on a professional basis. I have a scientific mind that evaluates facts available to come to a logical and pragmatic conclusion. The paranormal has never ever come into it. All the more reason why that incident freaked me out considerably.
I can't put you in my mind to see and hear what I heard, so you can't understand what you don't have access to. But very occasionally things cannot be understood because what we have seen or heard has not been explained in science or rationality, or is above our current understanding or technology.
Weird stuff that cannot be explained does happen, and some people will choose to look to the paranormal as an explanation, while some other people who are equally confused will write it off as having a rational explanation, but don't know what that is yet. There are also some folks that will not choose either of those options as they believe it is neither. We simply cannot prove or disprove any of those beliefs at the moment, and science will probably offer some explanation in 20/30 or 100 years, that to our minds now, is just as unbelievable as the paranormal is to me now.
Your point seems to be that there are things we cannot explain. Certainly this is true and may it always be so. My point is that the least fantastical explanation should be chosen in these cases (Occam's razor). If the choice is between some failure on my part to come to a rational conclusion or the overturning of the entire body of scientific understanding then I'm going with the "I'm a numbnuts hypothesis". If I don't know then I don't know and just making stuff up without recourse to evidence isn't going to help and is in fact more likely to mislead me.