Writers and painters alike are in the business of consulting their own imaginations, and stimulating the imaginations of others. Together, and separately, they celebrate the absolute mystery of otherness.
The idea of withholding a massive secret is obviously quite exciting to some people. It is also the basis of much classic drama, of course, from Sophocles onwards.
In my worst moments, I think the biggest effect of 'Eats, Shoots & Leaves' was to kill the happiness of people who had previously skipped through life, unaware of all the atrocities lurking in the world around them.
I used to help my dad with a stall selling eggs when I was about 12. People were so hard up they would ask for one egg. But mostly no one came by at all. It was very demoralising.
All writers learn this, in time: don't show your work to other people until it's safely finished. Even discussing your unborn book in quite general terms can be such an undermining experience that, afterwards, you give it up and go to live in Guatemala.
Oh, the illusion of choice in the modern world - don't get me started. But don't you agree that the Internet has softened our brains and made us forget that 'choice' used to mean something different from selecting options from menus?