Nope, not kidding. I'm perfectly happy with my 1.8 GHz Mini and my 800 MHz iBook. I think 3 GHz is all the consumer mass as a whole needs. I think Apple should've stayed with PPC, and stayed where they were in terms of processor speeds. (RAM and hard drive updates would work though)
Maybe I can offer a different perspective.
The world of computers is very dynamic and is constantly changing.
Eons ago, read 30 years, memory was measured in Kilobytes, with 16 being a huge amount. What we could do with computers back then, which was very cool at the time, would now be considered very limited.
There was no gigahertz myth back then. Heck there wasn't even a megahertz myth! CPU speeds were sub megahertz back then!
As the capabilities of the hardware grew, so did the applications that could run on the hardware that was available. What is now common was not even attainable back then.
To give an example, take a look at the Grapher application that comes with Mac OS X. In a matter of seconds I can graph a 3D object and then change the variables/equation and see the new result in a matter of seconds. This is awesome power for those who can use it. Back in 1977, I saw a mini computer that could barely draw a 2D chart that produced a single curved line as the output. You could actually watch each data point being plotted (drawn). Yes, it took a long time to plot this simple 2D line.
My point is while the computers of today can do well with what we currently have and use software wise, who knows what will be available 10 or 20 years down the road.
That is why computer hardware will continue to evolve and improve over time. So while what you have works for you now, who knows what you will want to do in the future as new application ideas come to fruition.
