I didn't really believe in ghosts until I saw the show "Ghost Adventures". It's weird because I've never seen a single spirit and I'm a "see-it-to-believe-it" kind of gal. In fact, growing up, I went to church every week, but still never found my faith in God. But ghosts, I believe in, even if it's just an inkling.
My best friend told me about the spirits she sees at home whom she's grown accustomed to. I know that she isn't crazy because when she had one of her friends over for a sleepover, that friend had also seen the spirit.
I've never had an actual experience with a ghost. I don't hear a lot of things, but I did once (less than a week ago, actually) see this blinking orb on the front door. It wasn't a reflection of anything, just a steady, blinking, red light. It reminded me of the smoke alarm when you see the light blinking, only at a slower pace. I was talking to my mom at the time and she was facing me and by the time I pointed it out to her, the light had disappeared.
That's not my story though. It's just the only other experience I've had besides this one: at night, I don't usually go to sleep immediately. I'm still laying down and I'm on my side so I can set my laptop on the nightstand and watch TV that way. This has happened several nights now, but not consecutively--the entire mattress vibrates. The first time I noticed it, I looked it up to see if I could find a logical explanation. Besides demons, theories included the bed springs, hallucinations, even an elevated heart rate.
I didn't understand how bed springs would've explained the constant vibrations which would lasted about five minutes (and sometimes, the dog would sleep on the bed and he wouldn't react at all, and I always made sure that he wasn't scratching himself, because that's how the bed-shaking felt). I've never had any reason to hallucinate since I don't do drugs, I don't have a mental illness (that I know of), and I don't have brain damage. I also highly doubt it's the heart rate because it was still lower than how fast the bed was vibrating.
I even tweeted the guys on "Ghost Adventures" about it, but you know celebrities. You get lucky if they respond. So far, I'm convinced it was a demon and ever since I saw the scene from "Insidious" where the psychic describes how the demon is hanging out near the ceiling fan in the darkness (I also have a ceiling fan), I sleep with a lamp on.
I'm still not completely sure if ghosts exist because I've never seen one (although I'm fascinated by real-life stories and when they're caught on camera). However, I know what I saw at the front door and I know what I felt in bed. I just don't really KNOW. I guess that's why they call it "unexplained phenomena".