The first L&C fanfic story I read was Sheila Harper's "Heaven's Prisoners". As she wrote in her forward I too felt that her set-up premise was flawed, but back then I'd never presume to question a writer's plot and characterization.
It was the 'meat' of the story that captured my attention. The hearbreak and the depth of emotion that Sheila was able to convey was something new to me. I was hooked.
A short time later, I thought about writing my own fic and checked the archive only to find that someone with the same name had already written a couple of stories. So, in order to not be confused with that writer, I resurrected my old college nickname.
The rest, as they say, is... whatever they say.
Tank (who has read a few more fanfics since then)