Hi,
I feel your pain and frustration. Don't often make comments on forums or anywhere for that matter. I too am like you in that my house is Apple based. Made that decision years ago for one reason, all their stuff works well together and I don't have to be a PC whiz to make it work. Try to setup a netgear router sometime....I'd rather go back to using pen and paper. haha. Regardless here is my situation and I thought I'd share just to simply give you another perspective to think about, if you don't want it, no harm no foul.
I have a Mac tower G5 bought in or around 2010, mostly used for two things, my home studio and photo's. I chose the Logic platform and i like it a lot. I used Logic 9 for years. The G5 is was and has gotten old, but still runs great. As the new OS continued to come out I hesitated, for many reason I'm sure we share. Then I took the plunge with El Capitan even though everyone talked of gloom and doom about Logic 9 not working. I did it, it worked great. I upgraded so that I could continue getting security updates. I don't go in behind the scenes and try to modify how my Mac works like I am some programming guru. They designed it a certain way for a reason, most of us are better off staying out of the behind the scenes stuff in a PC. Too many people go on google, read and article, and then think they are a programmer. Makes me laugh!
For years I kept up with Logic X and how cool it looked and reading about it's issues and finally they got most of it worked out and I upgraded to Logic X. I have never looked back, it was well worth the money. If you have the 7 devices or whatever in your house and add up what you spent on all that hardware, $199 is nothing. Just saying. I'm not made of money either, but.... This machine I use is hooked to the internet, I'll get to that!
Current situation
Just updated to High Sierra. I don't put a lot of goofy stuff on my PC, so it typically runs without issue. Same true on this upgrade. Only thing that seems to not work is, Logic 9. After all the updating I saw the large circle with the slash through it and LOL. It happened. I should have read about it up front, but I doubt it would have changed my direction. Here is why. The internet.
I joked with my wife that some day this Mac tower would be diconnected from the internet forever. My guess is that High Sierra is my last OS update. I will just keep making music with the latest I have. The new tools are more than enough. You know as well as I that the music is about creating in your head, writing the songs, coming up with new melodies, and Logic X has more that enough to do that forever!
There are ways around all the concerns that pop up with being disconnected from the net. It's really not a big deal.
Hopefully my War and peace novel just simply gives you and maybe others something to think about. You don't have to be connected to the net to keep creating great music. There are plenty of ways to get it out there.
Man, have a great day and keep making music! That is what makes you happy and smile and probably others around you happy. The music really is all that matters! Just an opinion!