I was thinking about what greg said - and it is kind of funny - when I write a song on guitar I have absolutely no idea what key it is in.
That's all I was saying. Mr Serious Sensitive up there took it the wrong way. I know lots of chords, lots of scales, where what goes where, what sounds good together, etc, but I couldn't tell you the actual key of any of my songs. And it doesn't matter at all.
I write riffs and melodies first and they are the way they are. Usually a song is arranged and done before I think of one lyric. Lyrics generally don't mean shit to me anyway - mine or anyone else's. I figure out a way to make my voice do what I need to do. It's not like I'm singing opera or some sterile radio pop garbage. I can be a little rough with my vocals and it's all good.