You were so offended by lack of new features that you actually downgraded?

I suspect there must be more to it than that.

No, I downgraded because cocoa builds of emacs randomly crash (fixed in git head), as does TeXShop (not obviously fixed yet). Also some other apps weren't running because of gatekeeper changes I didn't bother to investigate seriously.

The lack of new features meant that I had no motivation to try to fix my problems / run git heads of software / figure out gatekeeper.

My El Capitan upgrade failed, and I wound up having to do a clean wipe and install... Which wasn't too bad, except I happened to be on vacation, and the wireless where I was staying went out and did the install tethered to my phone (that was an expensive phone bill).

Ever since an upgrade to yosemite corrupted my partition, I never ever do upgrades on vacations (nor do I upgrade when it's just out)... I don't trust Apple's QA enough

I'm also seriously considering moving away from macOS after a decade.

The hardware situation is ridiculous and macOS isn't as stable and streamlined as it used to be.