I've used Windows nearly my entire life, save for brief dalliances with Kubuntu in my teens and Mac as an adult. Even though I'm happy to see that Microsoft is giving back more to open source than they were twenty years ago, I'm done with Windows as of this year. Between the loss of control, the advertisements, and the dark patterns, I can't stand using it anymore. Just picked up a System76 for my new daily driver and it's been a great experience.
Windows is racing to the bottom as fast as it can. It reeks of desperation.
Laptop, the Gazelle. My only complaint is that the keyboard makes too many sacrifices in order to fit in a full numpad, an inclusion that I find unnecessary (laptop keyboard designers, a full-sized right shift key is more important than full-sized up/down keys, and both are more important than a numpad!). Software-wise it's been great; Bluetooth works better on this than it did on Windows, and I only had to do minor configuration to get the UI to my taste (and it was quite easy).
Totally fine, I use the trackpad exclusively all day, with no external mouse. It's not as lusciously-buttery-waxy-smooth as my old Dell XPS, with the same sort of occasional rubbiness as my Macbook (though I'm sure someone will quickly appear to tell me why a PC can't possibly have a touchpad comparable to a Mac). Palm detection is flawless and multi-touch gestures support is miles ahead of Windows, with a friendly GUI for configuration that even works on a per-app basis so e.g. I can tell it to make three-finger-swipe-left pass Alt+Left when in Firefox. I don't like its pointer acceleration as much as Windows', but that's probably a matter of me not bothering to fiddle with it.
Windows is racing to the bottom as fast as it can. It reeks of desperation.