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Ethereal
I do not need high end graphics because I play on my Xbox.
'Eventually become outdated'. When was the Xbox 360 launched? 2006? 2007? It's been 4-5 years since it was launched, and I don't see any news about a new console coming out. At least not for the first half of 2012. And updating the Xbox online is much easier than updating my laptop's VRAM and RAM.
'Overpriced'. Again, you consider only the specs. and not what really comes with a Mac. But you are entitled with this opinion- I, myself, do not think Macs are neither overpriced or underpriced. They are right were they should be.
Yeah, upgrading the hardware is much harder. But updating the software is much much much easier on OS X Lion.