Yes these stories are interesting - and that's all to me. I do know there is a spiritual realm that we cannot see. There is no question about that. But, I will conclude this discussion by asserting - that while we know there are spirit beings - and that some of them are entities called demons - we know (or should know) that they are limited in power by the One who created the Universe, and that Jesus Christ is the One to whom all authority in heaven and on earth and under the earth has been given!!! It was Jesus Christ who spoke and commanded demons to leave their tormented "victims" and they instantly had to leave!!! He does the same today. In His Name, all oppression must cease and all oppressors must flee!
These resident "ghosts" are a reminder to me to always in all things be in prayer for those around me because we never know when it will be our last chance for pray for one in need or to speak to one who is hurting before they leave this life.
My grandfather died in his home (where I was living when I was a child). Yet there are no ghosts in that home - we had no visitations and nothing like what we have described. These things do not happen in all death cases. So what is the reason? Perhaps a poor soul had not been prayed for??? I don't know. My grandfather spent one hour each morning on a "morning watch" of prayer and scripture reading. When he left this world, his soul was at Peace with His Lord. May it be so for all of us whenever it is our time to go.