To be fair, batteries for Logitech wireless keyboard (K270, non-fancy one, without backlight) last for years. Same for their Marathon mouse. Battery is not the reason to skip these devices. Connectivity might be, I had some interference with multiple sets nearby. But if you're solo they work very reliably.

> I struggle to justify it

My keyboard is never further away from my machine than the length of the cable, so I see absolutely no reason to complicate things by adding batteries to the equation.

Wires also double as safety tethers for angry people who like to throw their mouse/keyboard.

Yes, I have intentionally purchased wired stuff for others with this in mind. Yes, they needed to get their shit together and they did.

My M50x's sit quietly awaiting the short spots where I use them for intense focus work.

There's two things I've made wireless on my desk: mouse and headphones.

I use trackballs, and the sheer donveni of being able to shift and adjust without worrying about a lead is mind boggling.

As for the headset: if you can swing it, pick up either the Arctis 7+ or Arctis 9 from Steelseries.

I have the 9 and absolutely make use of the split between normal audio and chat audio during calls. There is a quality of life improvement from my being able to walk in circles while I hear conversations go in circles.