Windows 10

It's fucked up if you ask me. Windows got really bad starting with Windows 8, this weird mix not being a table OS and neither a desktop one. Requiring third party tools to get an usable start menu back.
Windows 10 is a bit better, but with the world leader company preloading a shitton of bulkware like Candy Crush Saga while still requiring a license (just that the OEMs pay for it doesn't mean it's free) is so bad.

Only thing to use it is DirectX 12 and some proprietary applications like Photoshop. Have CS2 working on Wine pretty well though, the never ones crash instantly but for usual stuff it's enough. Never got used to GIMP unfortunately.
For everything else I use Linux, the Arch flavour as it's much faster than Ubuntu and all the software is available too. The AUR collection even does source compilation for you if there are no binary packages available for a given application.

Gentoo is interesting too if you have a fast machine and know what to do.

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New Windows Insider Builds have Windows Subsystem for Linux (WSL) Version 2, which they say contains a "true Linux kernel". For what this is really necessary I don't know as it probably won't let you run unsigned drivers / direct hardware access so I don't see a need for this but let's try it out.

WSL v1 works pretty well, there are some crashes with intensive use but think it can be optimited. They should rather implement Wayland for Windows as it's still officially console only (X works well through 3rd party tools, once again).

But if you ask me, software is generally fucked up. We should have a tiny, shiny fast and crash-proof OS available after decades of development time. Never got it why Apple didn't do a clean room implementation but instead acquired NeXT (not even BeOS which they intended at first), then re-implemented almost everything with source from NetBSD and whatnot. It's as bloated as Windows or your favourite Linux distro now.

An OS should be doable in a few hundreds of MB or even less, the core might be just below 100MB and booting up instantly, letting you do a full system upgrade without any reboot including drivers, as a microkernel, once stable, would only require an update in case of security breaches which should be rare with a small code base.