Anyone who wants to run a 64-bit rendering program on a laptop deserves all of the problems he or she will likely run into. Or a 64-bit Verilog simulation. Or a 64-bit database program.
More of the insanity that comes from the Turdion supporters who swear that 64-bit matters in the mobile market.
Mostly that consumers will want to run Windows Vista without having to buy another laptop. I know the ability to run XP factored into many buying decisions when that transition was taking place.
It is natural for consumers to want the latest and greatest OS without having to plunk down dollars for new hardware.