Meh, I loathe both.
But after being unable to even _install_ the Win7 downgrade that was promised with my purchase of a Win10-only machine (several years back), I decided Microsoft's obsession with licenses and stuff was just getting in my way. I grabbed Ubuntu and haven't looked back.
Linux is awful for its own reasons, not least of which is a flippant glee with which decades-reinforced UI reflexes are jettisoned in favor of someone's new window-management metaphor-of-the-moment. But those seem easy enough to opt out of, I can tweak a few things and I'm largely fine day-to-day.
Updates tend to break things in weird ways, but I can always just reinstall, or decide it's time to try a new distro, restore /home/ from backup, and go on with my life. A Windows reinstall is usually a multi-day affair and barely works afterward.
My biggest Linux gripe lately, and this might be Ubuntu-specific, is hiding the names of the programs. There's an image viewer apparently just called Image Viewer, and if you think that's fucking obnoxious to search for help about, you're right! Ditto with pretty much all the other default GUI tools. I think the file manager is probably called Nautilus but you can't get it to tell you that, you have to just infer that from googling error messages and finding them mentioned in issue-trackers for something called "nautilus". Aaaaagh.