Since I'm only 18, I don't think it's fair to call me an "enthusiast," since I'm on the same site as people who have had waaaaay more experience with coasters and parks. I've been intrigued by coasters since I was 12, coming on this site to learn the facts and discovering RCDB years back. From there I learned how to distinguish an Intamin from a B&M, and annoyed my friends with corrections on ANYTHING they said about coasters, using coaster jargon. I've only been to KI and CP, but it is a goal of mine to visit other parks and experience some of the amazing rides you guys talk about on here.
My freshman year of high school, I bought a $240 seat on Diamondback for opening day, made my mom drive me to the park to get there by 6:30 am, sat on the train with a complete stranger, and talked stats with that person until the ride began. Some people assume I don't know a lot about coasters since I'm only 18, but the ones who actually listen are surprised at how much I know.
I get Kings Island's tweets to my phone. My facebook posts must seem so weird to people, when I share my thoughts toward anything about Kings Island and it just screams enthusiast. I relate every school project to roller coasters or Kings Island. People at school get weirded out when I'd look through KIC or RCDB during study hall, but roller coasters struck me as the coolest things ever when I was a kid, and I'll probably never stop being a coaster geek