Mat 12:43 "Now when the unclean spirit goes out of a man, it passes through waterless places seeking rest, and does not find it.
Mat 12:44 "Then it says, 'I will return to my house from which I came'; and when it comes, it finds it unoccupied, swept, and put in order.
Mat 12:45 "Then it goes and takes along with it seven other spirits more wicked than itself, and they go in and live there; and the last state of that man becomes worse than the first. That is the way it will also be with this evil generation."
The question to ponder is why is the house empty? What makes it so attractive to demons?