Got one.
Relax security theater: What is point of asking for password every time I move something in or out of Apps folder?
That's not usually my stuff. The stuff that needs to be kept secure is in docs and pix folders. Apple doesn't ask for pw then. The scheme is set up more to irritate than to secure. Change an AppleScript App? Sorry, you'll have to reauthorize thru security prefs. It a dumb set up, that annoys, but doesn't really protect the things that most usually need protecting.
I don't wan to be "impressed", I want to be protected. Maybe T2 will do that, but it looks to me like it blocks me off from access to the metal; a process that's gone too far already.
There's no reason for iTunes to try to push me into cloud every time I open. I got fed up enough with that that I'm running iTunes 10.4 under Mojave. It lets me listen to the music I want to hear, without suggesting what to play next, or trying to get me to surrender my version of a piece of music to their version of the music, that goes away when I leave WiFi or cell range. These are MY Macs, not some funny little clone pieces of a corporations garden. I want to do with them as I bloody well please, not as Some guy with bad mechanical and software engineering skills, and his giant corporation please.
These days I'm moving more towards Raspberry pi/Debian than Windows. Lots of pinouts, and very few "I'm sorry Dave, I can't let you do that". Be nice to have USB 3, but if I can get the hardware to do what I want without triggering "Hackerzzz!!! Alerts!!!! from Hell" I am happy.
Regardless if you understand why there's a reason for the security measures you complain about. You're right about they're your Macs so you can do what you want to them. The software to include the operating system isn't yours. You're just licensed to use it. It's the same with Windows BTW. Macs aren't for everyone and maybe they're not for you. Some people are happier with Windows and others with Linux. That's why we have choices. What works great for me could be terrible for you.