I added a workstation with the i9 CPU and the only way I could buy a new one was with Windows 10 pre-installed and the only drivers available are Windows 10 drivers. That is the only reason I bought the computer with Windows 10 installed.
Windows 10 has a significant and negative impact on computer performance with all the bloatware. Users seldom notice the difference as they have an old machine running Windows 7 and buy a new more powerful machine that is running Windows 10. Windows 10 is by no means more secure than Windows 7 in any regard. It is just as easy to hack a Windows 10 machine today as any Windows 7 machine.
Windows 10 is a lot more secure, and not just as it's the only one of the two that's getting patched.
Virtualization based security is a biggie (bits of kernel are off on their own)
Credential Guard
Device Guard
Secure Boot
Ransomware protection
It boots faster too.
Win7 was built on a 10-year old codebase, Win10 is new
Plus what bloatware interferes on a day-to-day basis?
Oh and you can change all the privacy options for stuff like callinmg home, which you can't in Win7 and the only option is to check every update and not install all the ones that do that, or just live with more outgoing data.
That said I still find Win10 very annoying on semi-regular occasions...
I have Windows 10 versin 1903 and I had to disable BitLocker and remove as much bloatware as possible and disable updates to have as stable a computer as possible.I spent a week researching Windows 10 issues to have a list of installation recommendations and post installation fixes to apply. Even with this research I missed a couple of problems like BitLocker and the issues with connecting to network printers using Windows 10 (no such issues with Windows 7 or Mac OS X) and getting the infamous "The active Directory Domain Services is currently unavailable" message.
The Windows 10 workstation cannot connect to an Canon laserjet on the network using Ethernet and so I bought a 20 foot USB cable to get around the problem. Hardly something I should have to do in 2020. With Microsoft is is always one step forward and one step backward. With Windows 7 I gained a Wintel 64-bit operating system and it was worth the grief. With Windows 10 the gain is with the new generation of Intel processors so as usual I update the OS to get a more powerful computer and not to get a better operating system.
Microsoft shut down its quality control testing lab in 2015 and now uses a single virtual machine to test code which is why new releases have shut down millions of desktops overnight.
I rely 100% on third party firewall and spyware and anti-virus and registry cleaners with the Windows 10 workstation in exactly the same manner as I have relied on them with computers running Windows 7, Windows XP, Window 2000, Windows 3.51, and Windows 3.1. Want a reliable and secure high performance operating system and you need to buy one of the grossly overpriced Apple worstations and pay a $4,000 premium over a Wintel computer.
Registry cleaners are always very brave... I'd only use one in manual mode to delete stuff you are sure is safe, or not at all.
Our last workstation purchase was one with Windows 10 and our last laptop purchase was the Mac Pro 16" laptop. The remainder of our workstations and laptops run with Windows 7 and will until we eventually replace them with Apple computers.
For a real revalation for the unitiated watch these two videos: