we believe that we know all there is to know
Kudos to you for writing that interesting post but I had to address this specific segment, which contains a statement that is absolutely wrong.
No one, from the common guy on the street to the scientist in his lab, believes we know everything there is to know. The latter in particular, dedicates his whole life just to that, research what's unknown. No scientist on Earth takes anything for granted, and no scientist believes they know everything. In fact, scientific research is based exactly on that, that we don't know everything. If we actually believed that, the entire researching field of Science would not exist. So you can see how what you said is not the case, and cannot be, as it goes against how the scientific method works in the first place.
This was not to refute your entire post, which is your view on the topic and I respect it as such, and leave it at that, it's just that I found that that statement there really downplays... actually totally negates the work of researchers. I'm sure that you didn't mean to, but that's what I feel it does nonetheless.
As for my stand on the matter, I don't believe in paranormal simply because I know that the concept of it is an ancient one that's always been used to try and explain stuff we couldn't explain at the time, with the knowledge and understanding we had. Saw a guy covered in long, thick fur? What would that be? A rare genetic disease? Hypertrichosis? Nah, gotta be a werewolf.
As that knowledge progressed we learned to dismiss some of those beliefs, but of course, something as ancient and as deeply embedded in every culture's lore as the belief in the paranormal can't just disappear like that, so it remained. And it will remain, maybe forever, I don't know. However, even though I was raised with a catholic education, and in a part of my country where supernatural beliefs are very strong and heartfelt compared to the rest of the territory, I eventually detached myself from such mentality and said to myself that just because I don't know how something works, I shouldn't just jump to the conclusion that something "supernatural" and that cannot be explained in the first place makes it work.
Of course, that's not the only reason for my stand on this. Aside from the "supernatural as a way of trying to explain the unknown" argument, there's also another one, that...
You know what, I'm gonna make it short by quoting someone who's surely more knowledgeable on the matter than me, since this passage just came to my mind right now. By Geralt of Rivia's words, from The Last Wish:
"People like to invent monsters and monstrosities. Then they seem less monstrous themselves. When they get blind-drunk, cheat, steal, beat their wives, starve an old woman, when they kill a trapped fox with an axe or riddle the last existing unicorn with arrows, they like to think that the Bane entering cottages at daybreak is more monstrous than they are. They feel better then. They find it easier to live."
To me, the paranormal is a very interesting historical and social phenomenon, and little to no more than that.