Most modern cameras do everything as perfectly as possible. They automate focus, aperture, shutter, film speed, white balance and everything else you would care to think of. They recognise faces and switch to portrait mode - even taking the picture when your subject smiles.
Lomo cameras don't. They leak light, over and under saturate your images, over-expose your images and sometimes stop taking pictures altogether. Why would you want such a device? Well I asked myself the same question when I bought my first Holga.
Most of you, I'm sure, will have heard of Lomography. It has been around since the early 90s and it just keeps getting bigger and bigger; it now has more of an established following rather than cult status, but this is why I recommend you spend some time shooting with a lomo as these cameras often provide very satisfying results with the minimum of input.