lol, I think these people will thinks Macs run on fairy dust and that similiar computers don't compare because they don't have the fairy dust in them. Even though the same components are in both computers, except the case looks a bit shinier.
Macs are overpriced, but that's nothing new. However you simply cannot compare them to Dell products in most cases. For instance the Dell Studio 17 vs. the Macbook Pro:
When the Dell breaks (and there is no expensive warranty upgrade added), you have to call in the error, argue with them over phone, wait at home while someone picks it up, wait at home when it gets sent back and then most likely send it back in.
Little story here: My girlfriend has a studio 15 and we sent it in (still within 1 year warranty) to have the display fixed because it had a pretty large area that was somewhat lighter than the rest:
When it came back after the first repair, the "new" display was flickering and bright yellow, the laptop had been dropped and some mobo damage occurred, so we sent it back in (took about 2 weeks and a good 7 hours of calls to get it done).
When it came back after the second repair, the display was badly fitted (uneven), the case was horribly scratched (like some used a screw driver to do it) and the mobo had not been changed. So it took another couple of hours to talk to support center (they have no own number, you get a different guy every time and you have to explain the entire story over and over again). After hours of talking to them, they agreed to send a technician to us, he replaced the screen, case and mobo and left quickly. He forgot to tape the CPU vent cables down so they obstructed the CPU (hi thermal shutdown) so we had to call again, and after 2 months we finally had it fixed. No chance of getting reimbursed for your troubles, no support and no idea of what they are doing.
Sure I could do it myself, but that would void the warranty.
If you Apple fails, you take it to a store (granted you have one close by) and you will have it fixed in no time. Most of the time you get a little bonus. I know that what they charge is a lot, but believe me, I would pay $2000 any day just so that I don't have to talk to the idiots of Dell support again.
Of course I use my Macs to generate income and I wouldn't be able to work without one (at least not for 8 weeks). Sure you can buy upgrades when it comes to customer support, but they do cost quite a lot for Dells.
Of course Dells are nice computers if you just want to game or do light word processing and watch an occasional movie, but the second my income depended on them, I'd shoot myself.
That being said, the Mac Pro is way overpriced, I have been in the marked for one since late November 09 and I didn't buy one because I couldn't justify paying the price (there are a couple of them where I work and I just use those for heavy rendering and whenever I specifically need the Kona). Everything else I currently do on a MBP or an IMac (far from superb, but the current MP is just too overpriced)