Macs are more $$ than PCs. Owning and using a mac (especially that $3000+ MBP in your sig) means that you have that much spare scratch lying around to spend on a computer that doesn't do too much more than a similarly equipped $1500 PC. Waterfield bags isn't your run of the mill $30 targus either, is it?
Lots of people don't appreciate computers and technology the way many members of this forum do, and they see a mac as simply a $3000 computer (easily a few months rent more than a regular PC). You have to be prepared to take some ribbing from the less mature PC people running old desktops.
Buying a mac is almost akin to buying a luxury car. The luxury car won't necessarily get you where you're going any faster, but you'll look and feel better getting there

.