About 20 years now ago, some teenagers were playing together. One girl had made a homemade Ouija board and used a drinking glass as a planchette or pointer. The rest of the children were Catholics. This particular girl's family were not religious.
Now these children only participated in this "game," for a lack of better word, of Ouija board to be friendly to this girl who was new to the neighborhood. One person just was watching, tacitly participating not even having their hand on the glass used as a pointer. And something happened. The glass ended up shattered. Everyone was shocked. At this point a demonic attachment was made.
For 17 years this person who was just watching suffered with the presence of this thing coming at times. They were suffering from some type of demonic influence. Then at some point about 3 years ago they contacted a known exorcist priest. The priest said a prayer of liberation and it was gone. Never came back, fini, over with. This particular person is a nuclear physicist, married, and is a normal person.
We don't know why some people are targeted by Satan, or at least it is not well understood. Personally, I know of a man whose mother used a Ouija board until most of the letters were worn off. He is an alcoholic. He makes his living doing silk screens. He likes to make T-shirts that idolize Aliester Crowley. According to himself, he is tormented by this "demon that comes out of him." Regardless of his mental disposition, because people will say he is disturbed, I have only heard of personal tragedies like this after using Ouija or witching boards. I have never once heard of any positive experiences where states of genuine happiness and well being have derived from these occult practices like Ouija boards.