To all those who do not understand why some people are disappointed, do you remember when Steve was himself promoting 64 bit over 32 -bit in WWDC 2007 ? Some copied text from live coverage:
Number four, said Jobs. Leopard is 64 bit from top to bottom. This is the first time that 64-bit will be mainstream in the computer world, he said not only does mean Leopards Unix underpinnings will be 64-bit, but so will Cocoa.
One version of Leopard runs 32-bit and 64-bit apps side by side, explained Jobs. If you write a 64-bit app, you can guarantee that it will run on every copy of Leopard out there.
To demonstrate the capability, Jobs loaded a giant photograph 4GB in size into a demo application that showed CPU and disk access. One version ran in 32-bit mode, the other in 64-bit mode. Running filters on both systems, the 32-bit version took 81 seconds to complete the tasks, hammering the hard disk in the process. The 64-bit version was able to load everything into memory, and finished in 28.48 seconds.
Were seeing a real need for 64 bits not just in scientific computation, but were hearing it more and more in the professional arts, whether its animation or the high-end Photoshop market, said Jobs. And please remember, almost every computer we ship is 64-bit capable.
Jobs also demonstrated Core Animation, which enables developers to perform extensive animation capabilities within their apps simply by calling forth core technology in the operating system, similar to how Tigers Core Image and Core Audio technology works.
You can check it from youtube as well:
http://www.youtube.com/watch?v=id5vpy2CapY
Now it is 2010 and they are still delivering 32 bit apps

I guess Steve and Apple are still doing the right thing as always ?