Battery life. Touch screen. Printing (still have some remaining needs for it).

The other thing, is that it has ceased to matter. I was a Linux fan for a number of years. I learned a lot from it, and I still maintain a number of Raspberry Pi builds in my house.

But today, virtually everything that I care about is platform independent, most notably the "scientific" Python toolchain. My programs run without modification on any platform. So I've become platform agnostic, and use whatever makes the best use of hardware resources such as the two things mentioned above.

However, in a certain sense, I've ditched Windows, because I've ditched caring about platforms.