This.
That said you can buy any old regular laptop and install Mac OS on it anyway, just not officially (google "hackingtosh"). Its slightly buggy but it mostly works, so i guess you could get the best of both worlds if you go down this path?
Half the time though i just reckon its to be seen owning a laptop with a big glowing apple logo on it even though i'll admit the build quality is pretty good. Most of the time i've seen people with macs they've either been the artsy type of person or the ridiculously (by my standards anyway) rich kind of person wearing designer clothes with cash to blow and wants to make sure the world knows it.
I've actually done the whole hackintosh thing before, albeit I installed it in VMWare rather than direct (didn't want to mess around with my data

), but that aside, it was pretty usable, all in all (this was Leopard btw). But then after a while it felt kinda stupid. Imagine running iOS on an Android Phone, it doesn't feel right. It just shows that there have been times where I've been tempted by Macs and iPhones, but it's more with the
design and
integration rather than the actual software itself.
But you're right, it's nice to be seen carrying an Apple.