Right, for example you rarely see younger, MacBook owners with the external mice. But when you find middle-aged folks with PC laptops, they are often using little travel mice.
It might be that Mac trackpads are a really good solution. For me, I try to avoid pointer devices, but when I do have to leave the keyboard, it's nice to only travel a couple of inches to the trackpad instead of a foot to the mouse.
I had my laptop pinched last week so I've been on a Mac desktop with a Mighty Mouse. The gesture control is so clumsy compared to what you can do with a trackpad.
No, I'll back Aidos up. I hated trackpads until the first time I used a MacBook. Apple's trackpads are just way easier to be precise with. I have no clue why. It can't be the software, because it's still true when running Windows via Boot Camp.
It is still an age thing. Old people have far worse a time on trackpads, especially on Windows.
I think much of the problem with Windows is in the Synaptics driver. On one Windows machine, I see 5-10% CPU usage whenever my finger's touching the trackpad. The trackpad on that machine works a lot better on Linux. On the other hand, some other trackpads work far better on Windows than on Linux.
One big difference between trackpad behavior on Windows and OS X is that on OS X there's always delay between when your hand touches the trackpad and when the mouse starts moving -- the first N ms are ignored. On Windows, it varies from machine to machine -- for example, on an ASUS machine I have, you need a certain threshold of movement and then the pointer catches up to what its location would be, but with others there's no delay.
