I have never seen a ghost.
My sister and my dad have both seen ghosts in my parents' house, which is the house I grew up in. My brother, mother and I have never seen one. My sister saw our deceased great Aunt Elaine. She also saw a little girl. My dad did not see anything clearly, but saw someone walk from my old bedroom into my parents' current bedroom. He thought it was my mom, but soon realized that she was in the kitchen.
My mother and I have both felt someone gently sitting down in at the foot our beds when no one is there. I never felt anything like that in their house, but I have in the house I live in now. We both think it's my father's mother from Heaven.