Life... don't talk to me about life.
Anway, there was a similar discussion to this a while back. While life is, yes, technically just a series of chemical reactions, I honestly think there's more to it than that. Human beings are not perfectly logical creatures; emotions, while arguably being a product of chemicals, cannot simply be explained away like that, in my opinion. If we operated purely as animals, as we ought, logically, to do, accepting the idea that life is just chemicals, then we should live for nothing more than to survive and to reproduce.
But I'd like to think that for most people, this is not the case. Most people live for something more than just that (well, I do anyway). People want happiness; they want friendship; above all, they want love; and I don't think that can be coldly and conveniently explained away by saying it's all down to chemical reactions. I can't explain it, but I honestly believe there's more to life than chemicals.