I suggest to you that Macs are almost certainly better for that very large mass of people—people who don't yet understand viruses, or don't even know what a Registry is, and so on. PCs really are for intermediate and higher users, while you could say Linux is for experts.
While you may be very right, Johann, I'd like to point out that Macs definitely are NOT just the choice of beginners! Forgive my digression from the topic at hand for this one post:
I work in television, and I'm typing this from my hotel room in Brisbane, Australia, where I've been a production coordinator for a major convention. It's my job to design and install the technology that runs this multi-million dollar production, and my team are seasoned professionals.
The front-of-house video rig for this production contains a lot of proprietary technology, but also 8 commercial computers. One is a Linux-based proprietary software system driving the lighting system. Six are Mac Book Pros, used for various applications - Apple Keynote (it's like Microsoft Powerpoint on steroids - a beautiful, professional app that does slick, tasteful animations easily and reliably). Macs are also used for music playback and on-demand HD digital video playback. One computer is a Windows based Toshiba laptop, which is there to run Microsoft Powerpoint, in the rare situation that a presenter has a PPT presentation that can't be converted to Apple Keynote for some reason.
So, at dinner tonight I asked the head tech, and also one of the TV producers here, why they use Mac over Windows. Their answers support my own experience: reliability and stability; durability of the hardware in a harsh production environment; and much better software for this type of production.
This is not isolated - Macs are the prevalent computers used in live production, video editing, audio engineering etc etc worldwide. I spend a lot of my time designing HD broadcast motion graphics, which is one of the most extremely CPU intensive roles you can ask of a computer.
Now, clearly, Windows machines have distinct advantages to other people and other professions. Gamers, modders and tinkerers should never buy Macs. Budget-conscious beginners who just want to surf the web probably shouldn't either. Corporations that need dozens of simple systems running Word or Excel wouldn't need to pay the premium for Macs.
But make no mistake - the ridiculous statements above about functionality, customization, essential features and compatibility, are just nonsense. Millions of Macs are used extensively in professional environments, by professionals, every day. Professionals who need performance, reliability, quality software, cross-platform compatibility, and customisation capabilities.