mrzougIt would be very on brand considering that you haven't made a single sensible comment yet. What other materials would you make a kettle? I don't think I'd want an aluminium kettle due to durability. Cast iron would be just as bad if not worse because of the thickness needed (thermal conductivity is inversely related to wall thickness) and would be much heavier. Enameled steel is your only other choice (other than copper which doesn't even need an argument) which has durability concerns and is susceptible to rusting.