Paul, that's kinda sad in a way. It does seem as though kids these days are a little bit more jaded. Two other eight year olds I know don't believe in Santa either. I never believed in Santa but I still felt a magical sense about christmas as a child and still do. Your kids will still have a love for christmas, but it's not all about Santa for a lot of kids nowadays. You can only make it more joyous and magical for them by encouraging other aspects of christmas like putting the christmas tree and lights up as a family - that to me is a magical experience in itself, with or without Santa. Just don't visit too many shopping centres in the one day...what got me as a kid was, how could Santa always beat us to the next shopping centre...
Enjoy the beers Paul