I mean, I used a wired mouse, and I'm guessing you do as well, but it seems like wired mouse users are not taken seriously anymore.
Reasonable people can disagree wrt whether a wireless mouse is acceptable for their use case, of course. Just like reasonable people could disagree when Apple stopped shipping devices with floppy drives and (later) optical drives.
This trend in laptop design towards providing fewer ports for what seems to be little more than aesthetics seems a bit backwards.
...except for the main advantage, which is the wireless setup's entire reason for existence?
Fair enough if you think wireless is advantageous in this case but I personally don't. Or if it is, it doesn't outweigh the disadvantage of having a mouse that can run out of juice.
Wireless mice aren't convenient to keep plugged in with many laptops in many carrying cases/bags/etc, and having to plug it in increases the set up time before useful interaction. So, for laptops typically used on-the-go, I see them as a negative.
And, mice can be useful fairly distant from a CPU; they usually aren't useful far from the keyboard (which can also be wireless) and, depending on the display size, may need to be close to the display.
I mean, its not like we live in the era when most computer use involves switching disks or other similar activities that require physical interaction with the CPU case, so there's no particular requirement that the CPU needs to be that close to the keyboard/mouse for the setup to be useful.
I guess you're right about the setup time, but that seems like an extremely minor irritation to me, compared to the moderate irritation of swapping out or recharging dead batteries. Ultimately, I suppose it's a personal preference: Do you prefer a tiny annoyance every day, or greater annoyance (still negligible, in the grand scheme) every few months.