Valid argument, but cost is the biggest factor in many of those areas.
It is also somewhat of a status-quo. People grew up driving sticks, and they continue to do so. More out of habit than anything else.
And driving skills has NOTHING to do with this. I can drive manual just as well as an automatic car, shifting has become natural and I don't have to think about it anymore.
I just find myself nabbing whatever automatic car is in the driveway though.
Again, FOR PERFORMANCE AND FUN CARS, manual is always winner. I couldn't imagine my STI with an automatic transmission. At the same time, imagine an S550 Mercedes with a manual transmission...it goes against the point of the car.
Obviously, I don't have an S550, but an Impreza sport edition is as close as I could get! My Impreza is my S550, and I want it to be as user freindly as possible.