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I have not installed Windows10 from DVD, or an .iso image, but I have upgraded my laptop from Windows8.1, and my desktop from Windows7 Professional, to Windows10, and I had zero driver problems, and no user interaction (well maybe it was almost zero user interaction) was needed to complete the free upgrade process.

The only work on my part that I remember, was changing the settings to turn off Cortana, and all of the reporting of my information to Microsoft, which was a small PITA, and I probably need to recheck those settings again, to make sure they remained turned off, as Microsoft (as well as other companies) have sneaky ways of turning things back on, that users don't want turned on.

I much prefer Windows10, compared to Windows8.1, and don't mind any differences between 10 and Windows7.

I would have to disagree that Linux is simple to install, but have to admit that I have not installed any of the most recent versions of Linux, so my experience is limited, and your assertion may be correct now, at least more correct than it was the last time I tried to install Linux.