If I'm on a desktop, then I use the mousewheel for incremental scrolling and home/end/page/up/down for faster scrolling.
If you have a long page and your looking for something "about this far down the page", there should be a TOC or a map.
On touch interfaces, it's just the side of the screen or standard scroll.
At this point, for me, a scroll bar is more an read only position indicator than an actual navigation tool.
Interested to see if I'm in a minority here.
I love my little HP plastic laptop. It's a plastic toy I got for $85, including a Windows 10 Pro license, and I just toss it into my bag when I want to go somewhere. Perfectly adequate for text editing. Yesterday I had Visual Studio Code, web browser with 10 tabs, Ubuntu 19.10 via WSL, and Docker desktop all shambling along. I felt like Jason Bourne driving an attack Lada.
My other Win10 device is a ThinkPad x230. Its touchpad is also limited, but has three real hardware buttons.
Mostly I use similar aged MacBook Pro or iMac with Magic Touchpad. Totally different level of quality, no comparison really.
I always wondered why pro Windows laptop users in my family only used extra USB mouse devices. Ugh. I have yet to experience a mass market Windows laptop trackpad that most people would be able to use full time.
It comes in quite useful when I need to move over a lot of space to find what I'm after. I'd be using the wheel on my mouse for quite some time otherwise.
Yes, all the time.
Seriously annoying.