Okay, I'll be the first to admit that this discussion left me in the dust long ago. (He said, confidently typing away at his ten-year-old, Windows 98-equipped Gateway PC) My experience in this debate is purely anecdotal.
The decay of my marriage can be traced to the day my wife bought her first Mac. Suddenly, I found myself in a mixed marriage, like a Mormon married to a druid. Her new circle of friends was strange to me - insular, elitist, superior and not a little stand-offish. Their commitment to this equipment bordered on fanaticism. I was baffled. It was just a computer!
Suddenly she and I spoke different languages. She had extensions. She was unimpressed by my ability to right-click. We rarely interfaced. The whole experience left me with an undeniable axiom.
A PC is a tool. A Mac is a lifestyle choice.
Damn cult.
(I now remove my tongue from my cheek before I hurt myself
)