Hear hear. The anecdata being thrown around in these comments is ridiculous. Like the above, and also the people saying "everyone i know has a desktop". So what? I need a powerful laptop, and i don't need to justify it to you. End of story. Apple's insistence on limitations are ridiculous and just as offensive as Bill Gates'.
Not everybody wants to have the weight on their back of a clock-ticking cost of doing their R&D online in the cloud. Many of us, including me, want a highly capable machine with an upfront, quantifiable cost, but that is professionally credible.