In my experience the people who complain the loudest about Windows are the people who know the least about it. People need to realise that 99.9% of all Windows crashes are caused by 3rd party drivers and not Windows itself.
Still, my Macintosh has never crashed because of this. I've had two kernel panics, none since OS 10.4.7 was released. In OS X, every application is run in isolation from other apps in the kernel. This means, if one application crashes, the rest of the OS and all the other Apps are still usable, unlike in Windows. I used to have Firefox crashing on my in Windows, which would bring the whole OS down with it. The only thing I could do is a manual restart (pull the plug out). In OS X, Firefox and even Safari have crashed on me a few times, yet the rest of the OS still stays up and running fine as though sweet FA has happened.
If you installed an application on OS X and it constantly crashed you would just install it rather than spending all your time on Internet Forums spouting rubbish about OS X crashing all the time.
An application crashing is mostly due to the application itself. The difference is, when an App crashes in OS X, everything else still works fine. When an EXE crashes in Windows, the whole computer becomes unusable. Don't expect this to change in Vista either, because it won't...
I have used Windows, OS X at length, and Linux every now and then. As most Windows users who you often find bashing Macs haven't used OS X for more than a few hours at once, or maybe never even really used OS X, I just take what they say with a pinch of salt. I know what I'm doing with Windows, which Antivirus software to get and which anti-adware/spyware software to get. I know I have to defrag every day (I did on my Dell anyway) and what not to download. I still hate Windows, despite using it for years. The problem is, 99% of the Windows using population doesn't know what Defragging is. In fact, I would have said that 90% of the people in my family/people I know who complain about their Windows computers running slow respond with "De-whatting?" when I tell them they should defrag.
One of my friends, who is a big time Mac hater got to use a Mac for a couple of hours a few days ago. He hadn't really used one before, and yet he was still always bashing them, saying how Windows was fine for what most people want. He ended up hating OS X even more after using it for a while, for the following reasons:
1. He didn't like the hockey puck mouse.
2. He was used to seeing the spotlight search icon in the top right of my MacBook Pro screen. The workshop where he was using this Mac were still running on OS X 10.1, so they didn't have spotlight.
3. When he clicked the cross in the top left of the Window, it didn't quit the software. I had to explain that this wasn't a reason to hate OS X. It's like saying "I hate Italy because they don't speak English, which I'm used to."
4. He said it was too difficult to remember all the keyboard shortcuts. "Use a mouse like everyone else then".
5. He said the design of Macs were too similar. He said the difference in design between the G5 iMac and the Intel iMac was lazy of Apple. I mean, we all know how great PCs look in comparison...
Mac bashers are by-enlarge VERY narrow minded, and haven't used all the different platforms at length.