Lots of reasons really...
Firstly you get the irrational fanboys who hate anything that isn't their chosen platform (this goes as much for anti-PC sentiment as anti-Mac sentiment) and as such feel the need to run to the internet and proclaim their feelings loudly and at length, often regardless of the setting.

Then you get the more involved computer users who object to Macs on the basis of their closed systems, their lack of choice for certain programs, and the propitiatory software that comes bundled along with OSX (like iTunes.) They also tend to sneer at Macs because of the hardware you get inside them and the restrictions they have when it comes to upgrading them.

On top of these you get people who hate Macs (and by extension Mac users) because of the price issue, people who hate them based on the adverts and associated "smug" attitude that goes with them, people who hate them based on Apple as a company and Steve Jobs as a person, and people who will automatically hate anything that regards itself as cool or different.

Frankly, some of them have a point, but a lot of the bias is pretty much out of date now and based on half-remembered facts or old tech that hasn't been used for years. Take the one button mouse for example - a lot of the stories and related comments about Source on OSX have laughed at how Mac owners are supposed to play properly when they've only got a single mouse button, but Macs have had multi-button mice for years now (granted, they're shit for gaming because of the way they're set up, but still...)

Ultimately it comes to down to perception; Mac owners are seen by PC / Linux users as smug, egotistical style-whores who care more about the box than what's inside it, while PC / Linux users are seen by Mac owners as more socially-inept geeks who will never know the touch of the opposite sex. They're both wrong of course, PC owners are just as capable of being obsessed with how their box looks (look at Alienware PCs and the prices they command) and Mac owners are just as likely to be sexless nerds, but then most of this goes on online rather than IRL and we all know the internet is powered by stereotypes.

Personally speaking, I have a Mac because I've always used them (the first computer my Dad ever got was a Mac Plus, so UI issues and the like have never been a problem for me), and while I love doing things on a computer, I fucking hate computers. I hate wires, cables, driver problems for peripherals, defragging hard drives and everything else that you inevitably have to do as a PC owner.

The Apple advertising about how it "just works" is true, and yes, I'm well aware of the cost to control and tinkering this brings, but it's worth it for me. In the last four years, my flatmate has had to replace damn near everything in his PC because of power surges, over heating and other problems, whereas I've replaced the disc drive and upgraded the RAM. The other, less noticed thing here is that while my Mac cost considerably more to buy in the first place, looking at the comparative costs over time, they're about even...
(Frank., Wed 10 Mar 2010, 14:17, 1 reply, 16 years ago)

P.S.
As for Steam, Source and gaming on Macs in general, I've been using Bootcamp and a Windows partition for the last four years (mainly for Source games) so I'm ecstatic about the news. Not only do we get native ports of some of the best games of all time, we also get continued support from one of the best games companies of all time. If it was anyone but Valve I'd still be happy, but the amount of work and innovation that Valve put into gaming as a whole means that this is the best possible outcome for us. The extra boost it'll give to OpenGL and games on Linux is good news too.

As for specifics about Source games / games on Macs, I haven't had any problems. TF2, L4D/2 and HL all work well, and while they may not be as pretty as on a dedicated gaming rig, they're still nice enough to look at and more importantly run well.

It's worth nothing that there are plenty of other (non Valve) games with Mac versions are already available on Steam, so there should be a nice range come launch: savygamer.co.uk/2010/03/03/here-is-a-list-of-games-currently-on-steam-that-already-have-a-native-mac-port-in-existence/
(Frank., Wed 10 Mar 2010, 14:27, Reply)

I like you
great link. :)
(Shippy likes linebreaks and doesn't care what you think, Fri 12 Mar 2010, 12:13, Reply)