Lee, it's the b*tch trophy wives -
(perfect phrase, can I borrow it next time some tart in a BMW X5 cuts me up in Wilmslow? 
) - that are a severe health and safety threat to us, not the urban assault vehicle hubby bought for them.
They can be dynamically unstable - higher centre of gravity means they'll roll more easily. But a driver with half a brain cell knows that means don't tailgate and don't corner too fast.
However, I fully agree with Osella's point - SUVs, by and large, are completely unnecessary, cos anything your average trophy wife/mother needs in the suburban jungle is available in - at biggest - a Volvo stationwagon. They're too big, too heavy, too thirsty.
But it's about want, not need. And if I didn't live in a tiny overcrowded country with miniature roads, I'd want one.