I read this whole thread with great interest. I wondered how you were getting on with your GNU/Linux journey?
You will not get devil's advocate from me, in fact I am here to present the opposite case.
Although it sounds as if you have mostly made up your mind already, there are a couple things I would like to touch on that have not been covered by others yet. And also for the benefit of other lurkers following along at home who may be considering a similar path of action.
I followed a very similar path as yourself. I stayed on Windows 7 long after Win 10 had come out. Finally I had enough, started dual booting, and eventually made the leap fully. Now a few years on, every box in our home runs some flavor of GNU/Linux (including routers, set top boxes, PCs, laptops, phones & tablets (Android), etc.). And when everything on your network is running Free/Libre Open Source Software (F/LOSS) and open (non-proprietary) protocols... it's amazing how well everything "just works" together, and how easy it all is to administer.
I don't think Linux is "harder" to use than Windows, certainly not nowadays. One can get started very easily with a regular Desktop Environment GUI, just like in Windows. There are many to choose from (in fact almost a bewildering array). But it's when you go to start doing more "power user" type things that the differences really start to become apparent. Under the hood, GNU/Linux is more like a box of Legos, Erector Set, or what have you... It's like a box of parts with which you can build darn near whatever you can conceive... This is part of the so-called Unix Philosophy, as explained in this excellent vintage video:
AT&T Archives: The UNIX Operating System (YouTube video)
There is a beauty inherent in the design of the whole system, the deeper you delve into it the more you come to appreciate it (at least I did). At this point I am automating all sorts of things using text processing tools, bash and Python scripts, for example automatically downloading all my bank transactions and categorizing them, etc.
But, you do have to become "sick of" Windows enough to motivate you to depart from the familiar. It sounds like you are there. In fact, the joke in Linux circles nowadays is that Win 8/10 were the best things ever to happen to Linux. lol So, you and I are definitely not alone.
There is one other very important factor that I needed to get my head around however before fully grokking what all the hubbub was about, and that is understanding the philosophy that drove the creation of the Free Software movement in the first place:
What is Free Software and why is it so important for society?
And furthermore, Why "Open Source" misses the point of Free Software
In my view, until I got my head around those ideas, I was still subject to making the same feature by feature comparisons that some others in this thread are making. But now I realize it's not about that, at all. Linux may not always compare favorably to Windows on every single feature. And then in other cases (like ZFS file system and many others) you, as a mere mortal, can get your hands on enterprise quality software, for free (as in freedom and as in price)!
But these questions are much bigger than just desktop and laptop computers. I have eventually come to form the very strong opinion, that in an age where everything (including your car, appliances, medical devices, etc.) is some kind of hardware, with some kind of software in it, the questions that Richard Stallman began asking ("who does this device really serve?") are much wider ranging and more important to all of society than simply "does this run faster or better than Windows." And I'm not sure how many people have really stopped to ask themselves those sort of questions.
Free Software is just a completely different paradigm. One where what THE USERS want is put first (and not some corporation, Intel, Microsoft, Google, the NSA or other government agencies, etc.). This is why for example, you can still find the traditional desktop metaphor widely represented in Linux (they are not trying to turn everything into a tablet OS. like Win 8/10). And also why the software and operating system itself are not trying to monetize / spy on you, etc... And how refreshing is that
for a change, especially nowadays?