I suppose they realized that it would be just a matter of time before someone outside of Microsoft discovers a way to use the kill switch. And then every Internet-connected computer running Vista will die instantly. Hmm... Doesn't sound like such a bad idea after all...Why is it OK for thousands of people to have their computers be rendered inoperable just because they run an operating system that you don't like? Oh, right, because Vista is the worst operating system in all of history and everyone that uses it somehow deserves their computer to be unusable.
I'd be careful with all the elitism you're spewing, you might choke on it.