Trackpoint was so vastly superior to touchpads for the majority of the existence of the laptop that it's only natural that people that were computing when that was the case just completely eschew the touchpad on their laptop, even to this day. That plus the fact that there's little impetus to change (unless you force yourself by purchasing a laptop without a nub).

With that being said, I think Apple finally nailed the trackpad. It's far better than those original trackpads that came on ThinkPads that was so comically small you couldn't really use it on top of absolutely horrendous drivers. I think for the most part trackpads on Windows laptops are pretty competent as well, at least on the higher end models. Windows precision drivers went a long way to matching the experience of using a trackpad on the Mac. On Linux the basics are mostly fine though it's still kind of a mixed bag.

I thought I preferred trackpoint; turns out I don't.