Well, I finally bit the bullet and upgraded my system.
What broke me? When they neutered the Windows 7 Update system, and doing a clean install didn't even fix it.
Seriously. Windows 7 is still supported software! I could see them trying this with WinXP, but Win7? Ouch!
I only had to upgrade my video card to get the system to be eligible to upgrade.
It went well enough, and I managed to keep most of my software.
Boot time was phenomenal!
The invasiveness: trying to push for a Microsoft Login as my Windows login... No, sorry. Not happening.
Fix/customize/adjust the Start menu? Cryptic and frustrating to say the least.
All the bundled crapware: Cortana, Edge, OneDrive, Subscription-based Solitaire... the list goes on and on.
Disabling and/or uninstalling much of the crapware resulted in breaking the OS, and I had to go to the Microsoft Community to fix things... That's another story in and of itself.
Not all my software is compatible with Win10 and either has to be run in compatibility mode, or replaced with something more functional under the OS umbrella.
Ugh. What a nightmare. Be prepared to relearn nearly everything OS related so you can actually get going with this monstrosity.
Beyond that, the UI is fairly slick. I never had Win8 or 8.1, so I can't compare those to Win10, but at least it has a desktop mode, and it doesn't default to "tablet mode" on me. Again, the boot time is great, and I don't even have an SSD. It even has dual monitor taskbar support built in! Kudos!
Also, once I found you can do a clean install using my old Win7 Product Key, life was a lot easier! I just used a clean drive, and put the old Win7 drive as storage and all my data was in familiar folders. Just remember to get the "take ownership" add-in, and you're golden.
I also strongly recommend using 3rd party email clients, like Thunderbird, a good browser, like Firefox or Chrome, and stay as far away from the toxic cloud as you can! Cortana has nothing on Siri but still harvests your data! No good can come from this, I say! She's been chained to the lousy Edge browser and Bing for a search engine, so you already know how useful her assistance will be based on that alone.
So, here's a couple of grains of salt to go with this post, and have at!