Arrogance is always a turn-off, IMHO.
We have both an official "Apple" store, and a "Mac" store here in Seattle.
I can say through experience that walking into the "Apple" store, one is greeted politely and people are quite helpful. The employees are organized as "specialists" in either the software or hardware aspects of Mac products. No feeling of "Arrogance" at this store.
On the other hand, when one walks into the "Mac" store, the employees are outfitted in "Doctors" coats (the long white type) and one expects to see a stethoscope around their necks. Many of these employees seem to have a bit of a "haughty" attitude, as if one just stepped into a "special" place that requires a "rite of passage" to be respected on their level. This could certainly exemplify the source of friction that is being seen as "hating the Mac".
For a PC user, the issues of purchasing a Mac seem to be:
1 - A bit higher price tag
2 - Mac platform software purchases will be required
3 - User hardware upgrades are limited in many of the models
If one adds the attitude being issued by some of the Mac users and employees, one seems to have a significant list of cons, with the Mac zealot's attitude becoming the biggest "con".
As has been said by others, the computer is a tool. As a tool, the Mac can easily be considered a good one. On the other hand, so is the PC, and why would one change to a tool that may come with a history of attitude?
For my part, I like both machines. The main issue for me, is spending an additional $2000+ dollars on professional productivity software when I can purchase the parts to build a screaming PC and use my current PC platform software.