It's not a popular opinion on here (where you can't even mention the M-word in a remotely positive light without someone screaming "shill!!") but I'm in broad agreement with your points. I updated my three eligible machines at home to W10 some time ago. Started at launch with my guinea pig laptop that was running 8.1 and it quickly became apparent that even though there was a distinct whiff of "Beta" about the whole thing it was shitloads better than 8.1, so a few months later I upgraded the other two from Win 7 and to be honest I've not really had any problems. The actual upgrade process was less of a headache than installing El Capitan on the iMac was as well!.
There's still some god-awful franken-OS traits such as the whole settings/control panel divide but for day to day use it just does the job. All three of my machines are on the elderly side with the most powerful being an earth-shatteringly powerful Core 2 Duo (WOOO!) and they all seem just as quick, possibly quicker than they did under 7 so that's a win. The UI changes took some getting used to and it certainly needs work in some areas but it's far better than 8 was and it's similar enough to 7 that swapping between my work machine running 7 and my home machines running 10 doesn't feel massively jarring.
Stability-wise it seems similar if not better than Win7 as well, I might have been extremely lucky but across all three machines I have running W10 I think I've only had things crap out to the point of needing a reboot maybe twice.My iMac has managed similar in the same timeframe to be honest.
I don't know for sure how much detail about what I do on my W10 boxes could be pieced together from the telemetry but to be honest (and it might be an indicator of how boring my life is) even if I assume that it's basically "everything" then I'm still struggling to care. I don't do anything on any of the machines that I'd worry about MS, GCHQ, or even the NSA knowing about. If they really want to trawl through my browsing history to see what car I'm day dreaming about buying next, how many hours I've spent playing MTGO or what dirty takeaways I've ordered this week more power to them. Sure I'll probably get targeted ads paraded in front of me but that's exactly the outcome of me using Amazon or Google anyway, it's nothing new.