When you start off with your first book, people assume that you're like all the characters in the book - and it does complicate things, when you're being constantly bombarded with it, but you have to embrace it.
I can see myself wanting to write a historical novel - you don't need to worry about references to reality TV or pop music, you can just get on with the basics of story and character.
When I started off with Trainspotting, it was the way the characters came to me. That's how they sounded to me. It seemed pretentious to sound any other way. I wasn't making any kind of political statement.