I believe in them. Living in a house built on a monk burial ground, it's a bit hard not to, especially when I was woken in the night to the sound of heavy footsteps going up and down the landing, stopping just outside of my bedroom, remaining there, seemingly staring in on me, then going back up the landing and stopping outside my mums room. This continued for 4 hours until my mum screamed for my dad to come up the stairs at which point everything went dead.
After than, I have had glasses smash in the night, heavy breath blowing in my face during the day and night, footsteps running up the stairs, the feeling of someone standing behind me in several rooms, 'waking up' before I properly go to sleep, more like drifting off and suddenly sitting up with heavy breathing, cold sweats and a feeling of terror.
My mum has also seen eyes at night, some are very beautiful, others old, others young and others dark and menacing. She went to a psychic and was told that the eyes were people who had died and had locked onto her spirit like a chain. She was told she had a man who watched over her and protected her from evil spirits because she was so susceptible. After that meeting, the eyes appeared once more, before disappearing for good.
In our house we have had people call names when no-one is home, things have been thrown when no-one is around and whenever we change something in the house, things come alive for a month or so before stopping again. Lights turn on and off, my disabled sister used to speak to 'imaginary friends' and open her draws at night before laughing and talking then going to sleep. one night, we heard the draws opening and closing and I thought to myself, "Oh she's at it again" until realisation hit me that she was away for the weekend at a hostel, that was definitely frightening.
There are many more occurrences only made worse by the numerous bodies we have dug up in the front and back gardens.