My earliest pinball memory is Haunted House. My uncle worked as an operator, and he stored HH in my grandmother's garage for a while. I played it way more than the arcade games that he left there.
Fast forward about 10 years, and was playing a lot of computer simulations: Looney Labyrinth, Pro Pinball, etc, and never thought it was possible to own a real machine.
I went bowling with friends, then totally ignored them while I played the TZ that was there. I was hooked. About a year later, I bought one. I have since completely rebuilt it twice, including a professional touchup/clearcoat of the playfield. It was my only machine for about 12 years, until the bug caught again.
I now own 6 machines, and I'm passing on the obsession to friends and family.