Scroll bars are a nuisance for me and only get in the way. I have no use for a mouse and am a touch pad user. Two finger scrolling is automatic to me for both vertical and horizontal scrolling.
I use a Logitech G402 Hyperion Fury mouse. It has 8 programmable keys, and their usability also comes from how well they are positioned ergonomically, but IMO the main advantage of using a decent optical mouse to control a GUI still comes from not having to sacrifice on accuracy during very fast movements. A decent stylus on a decent touchscreen also lets you achieve very high accuracy combined with much faster speeds when compared to a large precision touchpad, but then you lose most of the advantages that can be engendered by using a 55 inch 4k display at a comparatively much larger
viewing distance.
Larger screens with larger viewing distances can help to recude eyesore and fatigue a lot. It also helps to avoid stress symptoms. Granted, the same can also be said about taking more frequent and/or longer breaks. On average, I spend much longer than 8 hours per day in front of the screen. It's often closer to 10 hours, sometimes longer. That's what you get when you're smack in the middle of Gen X, aged 50, and grew up with an
MSX computer. lol The Sony HB-75P was my first computer, I got it 39 years ago, and, I used it to patch the code from Microsoft soon after I entered high school. Patching the code from Microsoft was very much necessary in 1985. And today, it still is.
So, I'm not ready to sacrifice the ability to lie down comfortably with the Logitech K800 keyboard on my lap while not blocking the Hi-Fi sound of my big pair of floorstanding loudspeakers. Just like I'm not ready to give up my K800, for various reasons, one of them being that it's the only wireless keyboard that not only is backlit and not only has enough programmable keys, but also has the ideal weight and shape to use it on my lap, and that I can easily pick it up with only one hand while not getting any accidental keypresses as a result of picking it up in this manner.
In a few certain ways, trying to be productive by using a touchpad compares to trying to shoot me in an online multiplayer first person shooter by, all else being equal, using an Xbox controller while I'm using my mouse. You'll lose. For reasons that should be completely obvious, this still doesn't mean that touchpads should be phased out. They shouldn't. But then, it also doesn't mean that most users who use a mouse should be pestered by having to restore productivity back to the previous high level doing things like delve into the registry (or use Winaero Tweaker) to fix the problem of scrollbars being too thin and use ExplorerPatcher to fix the problem of icons size and icons spacing being too large, all notification area icons being not always visible, wasting valuable screen estate due to the taskbar height, sacrificing toolbars, etc..
People can choose to ignore these problems and get used to having these problems, possibly whilst also claiming to adapt, just like people can also be unaffected by these problems, e.g., as a result of never using a mouse. But this doesn't also mean that these problems aren't real, or that those people who use the various remedies are using them because they are being mass-delusional. Not pointing any fingers here, but the old mantra of "just adapt to it" is not helping anyone.