That is a well argued, logically presented post, old mate. The only bit that I disagree with is presenting the case as a one way street, as it were. Optimists stifling the debate against the pessimists. It's been my experience that the opposite is also just as true. Unfortunately, the more an individual bangs a specific drum, especially on a daily basis, the more other folk become entrenched with their views. I accept I am guilty of this more than any other poster and have to accept that my stance is one that stifles debate. In the future, I'll try to engage others far better than I have during this Summer. Hopefully others from a polar opposite viewpoint will do the same.