Yeah, me too.
I think you're loosing sight of the camera's (well, the software actually) ability to adjust the sensitivity of the sensor. That's what you're doing when you crank up (or down) the ISO rating. Trust me, you have a range of options open to you to adjust the exposure; the aperture, the shutter speed and the ISO - The first two are physical and the 3rd is purely electronic. Instead of fitting a lump of black glass to the front of your lens, because you can't stop the aperture down any further and you want a slow shutter speed, why not set the ISO to EV 1?
I know you can't do that because the software has a band in which it will operate and in the quest for ever higher ISO ratings, the lower end gets left behind. My first DSLR could go down to ISO 25, my second would do ISO 50, my 3rd could do ISO 100, now my 4th (D300s) will only go down to 200 (Well, it will do strange things to simulate 100).
Camera manufacturers seem to be pushing the boundaries of ever higher ISO ratings, while we poor mugs on the ground have to spend a fortune on Big Stoppers to push it down again! Perhaps a big switch on the back of the camera that says, "Super Fast" and "Painfully Slow"
