I am keeping my 2 Media PC's (using WMC) on Windows 7.
No good, easy alternative out there for me. I have tried several Linux and Windows 10 based options, and they just don't work as well as WMC for my needs.
The only thing they get online is guide updates, nothing is downloaded onto them, they have current AV and are behind a VPN router.
I am about to update my sisters Windows 7 computers (am a little worried about it, a dual core Athlon II with 4 gigs RAM) and my moms (similar spec, just a little faster Athlon II).
I really need to get them to update their computers to something a little more modern (and may do my mom's out of my pocket depending on cyber Monday deals).
I just updated my wife's Windows 7 desktop to Windows 10 a few months ago, and the latest big update bricked it. I luckily had not erased the old cloned SSD I had (I got a new M2 for her, so the OS was on that, so was an easy repair).
Wouldn't even consider it. Load Ubuntu Mate or any one of many other great, light, Linux distros. You'll never go back.
I have tried various flavors over the past 15 years (Mint (Cinnamon and MATE), Ubuntu (and Ubuntu Netbook), Knoppix, Kubuntu, Fedora and a few others) , spend almost a year on Ubuntu as my primary OS (was on my laptop and Netbook, my 2 primary use computers at the time).
I always end up back on Windows due to something not doing what I wanted how I wanted. Things in Windows that were native or simple just took too much effort to figure out.
Not bashing it by any means, it has it's place, but it just is not for me, and saying things like "You'll never go back" is just ignorant.