Microwaves have their own problems - they can superheat water without boiling it, which will then explode in a fury of scalding foam as soon as you jostle it.

Microwaves have their own problems - they can superheat water without boiling it, which will then explode in a fury of scalding foam as soon as you jostle it. They're also frequently mounted overhead, where it's more dangerous to retrieve a mug or big Pyrex cup. Contrast that with the kettle which has that little flap over the spout and is spill resistant.