I would think that electric kettles are much quicker and more efficient and they turn themselves off when they're done. When I'm cooking, I always boil water in the kettle for pasta, etc, rather than starting with cold water in a pan. Hob kettles are a bit of a faff too, IMO and the whistle soon loses its novelty.
We were given [[ this]] one as a house warming present. I was dubious (to say the least) but after a few months of use I'm totally converted. It boils really fast, looks gorgeous and i just pop it on a lower heat don't flip the whistle on if I'm popping upstairs (or some such) while waiting for it to boil.
It's so nice not to have an ugly electric one cluttering up the worktop anymore.