I think having a gaming PC would be a nice option to have, especially if you're interested in 4k gaming. While the newer consoles do support 4k and HDR, there are some games where it's implemented poorly and not true 4k from reviews I've seen.
The other plus side to windows gaming is mods. Depending on the games that you want to play, i.e current titles or what not, the modding community is very large. For me, I was hooked on Skyrim and Fallout 4 where I could mod the heck out of it. It was awesome and challenging at the same time. Of course, there are also certain titles made for PC as well, such as indie games available on Steam. If the goal of owning a PC is to play the most common titles available for all platforms, then to be honest I'd stick with consoles. The only other reason, which you mentioned you had no interest in are graphics.
For me, I've been a heavy mac user, but I switched to a windows PC back in 2016 for two years. I've always wanted to play a ton of PC games I could never on mac without bootcamp and ultra graphic settings. I do own a ps4 and xbox one, but whenever a title came out for all three platforms, I'd go PC since I knew I would get the best overall experience.
My current rig is an i7 8700 k overclocked to 3.9 ghz, two nvidia 1080ti graphic cards in SLI, 32 gigs of ram, 2 ssds and 2 WD Black HDs. This is all with an Acer predator x34 monitor with g-sync and 100 hz refresh rate. I did go crazy with my build, but I've never had something that awesome and when I had the ability to afford it, I went all out.
So overall, it depends on what games you're interested in. The only reason I went back to mac os, was I sorta missed the environment. So i just got a mini for office work.