I don't care who you are, I simply do not trust your fresh release of anything, I do not wish to fix your mistakes, and do not believe over time you'll be awesome at not breaking anything ever. In fact, I think that's impossible to do 100% of the time.
Not now, not ever. Because many many years of doing change management has told me that would be stupid and reckless, and I don't work in places which are willing to do that.
Unfortunately, Microsoft seems to be trying to go down the route of pretty much forcing as many people as possible to get the updates immediately.
Either because they're arrogant morons, or they figure it's just easier if everybody else does their beta testing.
There isn't a software vendor on the planet I would accept a first day release from. And I've seen far too many day 1 mistakes from Microsoft and other vendors to ever change that.
But we've all become accustomed to accepting it. You buy that new cell phone for Christmas, it'll have a .0 release of the next gen of the O/S. It'll have bugs, problems, zero day vulnerabilities and as a consumer you'll be happy to wait 6 months to a year for a fix. You like that new Tesla because it's green, ultra cool and preppy. Is your fire insurance up to date? We do this because we want the glitter and in Win 10's case I'm not really too sure that it's revolutionary vs. Win 7 or Win 8.x. All I know right now is I have to migrate code to support it for a few customers.
There's an old joke I know that sums this up.
A little boy was annoying his mom. She then remembered that next door there was some construction going on and she told her son to go over there and watch the men working but don't get in their way. After about 2 hours she called him in for lunch.
During lunch she asked her son if he'd learned anything by watching. The little boy responded "Yes mommy!" and went to his room and brought back a ball of string. He gave one end of the string to his mother and told her to stand up, which she did.
He then order her to "move a little to the left."
"How move to the right."
"Naw, left a little bit."
He then said "Aww fuck it! nail it right there!"
Sometimes you just have to ship the product.