Yes, I believe in the other side making or trying to make, contact with us. Some have things left unsaid or have unfinished business. Purgatory is what many souls experience after their physical being has left this earth. I am a retired Veteran from the U.S. Army who served during the Vietnam war. MANY strange occurrences and unexplained happenings. Matter of fact, the early 1800's home my Wife and I bought in 2008 is lived in by 2 spirits, not ghosts. Ghosts and spirits are essentially the same as they live in the same realm and have the same kind of energy. However, there are subtle differences too.
A ghost has more of a negative connotation associated with it when in comparison to a spirit. It is like a soul that finds it difficult to cross the realm between living and the non-living. Ghost stories add on to this feeling of being scared and wary of ghosts that you might find around the corner.
On the other hand, spirits are there, and we may feel them such as a cold blast of air or a sound in the corner. They are like elves in fairytales who might be mischievous but not harm you maliciously. Spirits are here to give us a guiding hand and are associated with a guardian angel. A parent or grandparent who loved you dearly and can’t bear seeing you in anguish will come to you in your time of need. They can be great sources of comfort and even advice one in subtle ways.
Ghosts do nothing of this sort for us. They are there and just their presence is ominous with bad tidings. They are probably waiting for someone to help them to pass on to the next realm where they actually belong.
I used to go to Richmond on work business and my Wife would get visited by a female & male spirit. At first, this freaked her out. But they were there to comfort her as she was alone in this big house. They usually only make appearances when there is sadness in the house. Like when my Wife miscarried and found out she had 2 large tumors on her ovaries. She had to have what's called a Salpingo Oopherectomy, where they took everything out of her. The spirits surrounded her for about a month straight. We would hear the steps at night as if someone was walking up them. They don't bother us at all. Just a calm comfort.