They always catch me by surprise when they go flat. Also about twice this year my mouse has just not connected for some reason and I have to use the laptop trackpad to fix it. This would be a big issue on a desktop. And if I have to have a cable available to charge it I might as well just have a corded mouse.
The only time I find a wireless mouse to be better is for use with my laptop because its easier to bring to meeting rooms. At home I use wired since it seems all gaming mice have awful battery life. This logitech one I use at work has 70 days which works for me but every few months I have to run around and find a cable which isn't nice to use since usb cables tend to be a lot stiffer than mice cables
I've only had one bluetooth device, a Fitbit, that actually worked with any kind of reliability. From time to time I still have to bang it on the side of my phone to get it to pair back up.
I’m a massive fan of Fitbit devices, they work great. But the same can be said of my Plantronics BT headphones, which I’ve used daily for almost three years, same for magic keyboards, mice and touchpad of different generations. Truth to be told, any cheap device that wouldn’t work reliably (I can think of a few BT headphones in the past) I just tossed or returned when possible.