bugmenot
Well-known
Higher ISO than 800 or 1600 is vastly over-rated. The situations when it might matter are extremely small, and for years and years many of us made due in fine fashion without having ISO 3200 or more. Not saying that it isn't the bees knees being able to shoot at ISO 3200, just saying that basing a purchase on something that you'll need rarely at most is foolish. Better not buy anything but a full-size pick-up truck because I mighty have to move sometime in the next five years...
Again, you sound like the spokesperson for all photographers. I agree, you may not have a lot of high ISO photographs. That's fine. However, that doesn't mean that all photographers dismiss high ISO like you do, as you seem to claim.
There are many wedding, sports and other high speed photographers that RELY on the high ISO capabilities of their cameras. If it wasn't so, there wouldn't be a race to see who can offer better ISO performance in their DSLR between manufacturers today. Sure, there are photographs in the same fields who may use low ISO, but they are a minority.
Or how about this: A sensor with a relatively clean ISO 6400 will have excellent ISO 800, and even better ISO 400. So just because somebody has 5% of their photos captured at ISO 6400, it doesn't mean that their camera sensor won't benefit from having better low light performance. It affects the entire ISO range, more or less.
Just don't generalize your photography patterns and habits to every single photographer out there.