I'm not sure I agree with some of Simson Garfinkel's answers to The 64-bit Question. He's thinking about memory in terms of current applications, products and storage needs. Perhaps the capacity is getting ahead of entrepreneurs' or the markets' abilities to find some use for them, but you can't tell me that putting that much memory and speed in the hands of the average citizen is a waste. That's not a reflection of too much aggressive marketing by the chip makers. That's more a reflection of how the software and application developers are way behind.
The computing revolution is supposed to empower individuals. OK. Here's the memory, here's the speed. Now, get to it.