There's one reason: one less wire to deal with. I bought a Logitech G703 just to avoid the clutter and tugging on the cable when using it (and not having to buy

There's one reason: one less wire to deal with. I bought a Logitech G703 just to avoid the clutter and tugging on the cable when using it (and not having to buy or build a dampener for the cable). It has a cable I can use to charge it or use when it's low on charge, and I can't notice any difference in latency when it's wired or wireless, or compared to any wired mouse I've ever used. I'm also not playing many FPS, and definitely not anywhere near a competitive level, so even if there is some measurable latency it simply makes no difference to me. The wireless dongle is plugged into a USB port on my monitor so it's only about a foot away, though not quite direct LOS. And if I wanted to fork over $100 for Logitech's wireless charging mousepad, I'd never have to plug it in again. I probably won't, but it's an option. The only wire on my desk is for my keyboard.