I don't disbelieve that there could be a human spirit that is separate from the body, part of something larger. "Don't criticize what you can't understand" and all that. Mathematically, we're 3-dimensional beings so anything it the 4th or greater dimension is beyond our full understanding.
If possible, you might want to check the history of that house and see if someone lived there who might have wanted to hang around. <^..^>
It was not a house, but a very old stone schoolhouse that is preserved. It is said the ghost is the first teacher there, but that is just a story to connect the common experiences. I can imagine the wind shaking the door so it sounds like it was opening, but being stone, the entire building does not shake, so the stairs don’t creak unless somone is walking up or down. I spent many evenings there and you could tell which stair was creaking because it had a specific sound. And you could tell when someone reached the landing half-way up. I just have no explanation, but it was really an interesting thing to experience. Not scary at all, but I would call it fascinating. It would be like seeing rain fall upward. There is no past experience in your life that you can use to understand it.
I’ve talked to soldiers and civilian survivors from WWII to Afghanistan and many of them who were at a battle have related stories of bad mojo experienced at a place where there was recent death. Kind of like something was left behind after a battle and was still there trying to touch the living. They all suggest it was more of an intense feeling of a spiritual nature and not an actual physical presence other than the body parts and blood that still remained there. Is that just a person reacting to what they see and smell, or is it the souls of those who have not yet accepted that they lost their life?