I mostly agree Damian, and I love buying sashimi grade fish and eating it as is, and other raw foods. But mixing spices you can create different tastes where the original element is only the canvas to which you apply paint. (It's a funny metaphor but a silly one, as I don't think you can do as much with cooking as with painting.) That is, it is not about creating the best tasting food but a new interesting taste.
For example, potatoes with Anise and fennel (among other ingredients) so that they have a licorice taste. Surprisingly it came out excellent. This would not be something you would get in a restaurant and was a nice new taste.
I wasn't referring to raw food necessarily. What I meant was that you can cook without spicing and still get a lot of flavor out of the fresh ingredients. Certain combinations like tomatoes, carrots, fresh garlic, pine nuts and basil leaves, that sort of thing. Just something to try sometime. I still love using and experimenting with all sorts of different spices when I cook.