Ew, I can imagine! He's such an utterly sick character...scary enough to read about, certainly, but writing him? I'd feel filthy in a not-remotely-good-way. (Speaking of which, I think I may have come across your fanfic before - if it's the one I'm thinking of, I couldn't bring myself to read it.) Which is odd - I enjoy being freaked out as much as the next...um, nightmare fuel station attendant, but Corinthian 1.0 makes me want to hide in a corner and cry. Fuck, my skin is already crawling.
Corinthian 2.0, though, I like - though I haven't read anything with him in it outside of the cannon Sandman series.