I don't see the relevance of what you are saying. No one is arguing that everyone needs 64 bits today. Are you saying that we moved too fast with the switchover to 64 bit CPUs? If so, what exactly do you think that cost us? I'd argue it cost nothing, since it was clearly needed on the server side already several years ago, and both Intel and AMD use essentially identical cores from laptop to enterprise server.

The desktop OS that follows Vista will almost certainly not support 32 bit CPUs. Frankly I wouldn't be surprised if MS didn't dump 32 bit CPU support for Windows Server 2008 (why would anyone upgrade a 32 bit server to it when based on Vista it'll probably demand 1GB just to sit idle?)

Linux will support 32 bit x86 essentially forever, but the distributions from say Redhat will probably drop 32 bit support soon. Probably not RHEL6, but I'd be kinda surprised if RHEL7 supported 32 bit.

So give it 3-4 years and I'm sure the number of 32 bit users visiting RWT is well down into the single digits.

And by then we'll all call the 64 bit implementation of x86 simply "x86". Even Linus.