I don't even drink tea, and I have an electric kettle. In case any guests want tea. It's the "done thing", as they say.
Another good use is dual-core boiling. When I need boiling water for cooking, I put some water in a pot and turn on the stove. But I also put water in my 2 kW electric kettle and will have boilng water within a few minutes.
But these days my kettle is almost solely used as a stand-by "tea making device" :)