wyleu,
Yep, you've spotted the evil power chewing banshee. But wait, it's not the humble iron that's at fault, as this has been used for many a year before developing its' symbiotic connection to the grid. The culprit which has weaselled its' way into our lives, is........THE ELECTRIC HEATING COIL.

This nefarious armour plated piece of wire was never meant to be a heater, that's a by product of eating soooo much current without so much as a proper load to justify its' existence. Whoever it was that brought it into existence could do with a good slap in the face with a freshly caught fish. Nay that's not fair on the poor fishy, how about being suspended head first for a day over a newly filled septic tank until he repents.

Anyway, the point is that around our homes are devices containing these little fellas everywhere we look. Some might justify their 10.5KW electric showers by stating that they are only used for a few minutes. I would say ......you are missing the point. Yes this is true, but it's the amount of power they draw instantaneously which puts a strain on our ageing power supply infrastructure, when everyone else is doing the same.
People seem to lead busy lives and require instant gratification (no ooo-err intended). This amounts to instant showers, instant irons, instant kettles, instant access tv, instant toasters, instant electric convection heaters, instant coffee and Instant Whip. Okay ignore the last two, but you see my point.
If you look at how much effort it takes to generate a KWh of mains power, and you had to personally generate this by your own means, you probably wouldn't manage to do it.

There are lots of alternatives around if you look, and I for one (that sounded like I am about 82!) am going back to using a hob kettle for a start and will turn my iron into a paper weight.
So, if you see a crumpled looking chap about 40 walking round Halifax, it might be me, but I'll be a happy chappie in the knowledge that I don't have to rely on multi-kilowatt appliances to live an ordinary life.

Keep smiling,
Pete.