Ioyza, I have been down these roads with my own experience, and like you realized that you cannot force any issues when it comes to understanding these creatures. Perhaps last summer, when I darted toward the direction of the knocking one dawn, hoping I might prove the knocker was what I suspected, well that might have cooled the waters so to speak. I do have the bent to want to produce something substantial in terms of evidence, if for no other reason than to continue to pursue the matter further. I guess where I differ from myself in times past is that I do not trust experience filtered through my own sasquatch tainted lens. If I am thinking sasquatch before anything else when it comes to examining possibilities of sounds, or of even a sighting, well then perhaps that lens is not clear enough to see correctly. Doubt can serve one well when it comes to keeping the lens clear enough to see what is actually there. I cannot tell you how many times I jumped on things before really thinking all the possibilities through.
An object being thrown at me? Or did it fall from a tree? A wood knock or was that a distant gun shot? Things can be confused and certainly are. The skeptical approach does not always conclude something is human, it simply rules that out first and foremost, as well as whatever might be mistaken for Sasquatch, Prints could even be mistaken, but not if they align with being much larger and wider than humans, such prints have been found in areas surrounding Chicago, so yes the creatures do exist very close to this Metro, without any doubt some move about the area, how many? Fewer than one might think I suppose. Maybe 5-8 creatures in my opinion North, South, East, and West, several 100 miles, and yes after almost 5 years I still hold to the fact I heard two of them in my own backyard area, that has been sifted and filtered though my skeptical mind and found to be substantial in terms of it's being legitimate.