You can think of one where it doesn't? But performance aside, there is also the matter of reliability. If I have something important to get done, a wired connection is a must.
Well sure, imagine you're an NFL coach. You've got a headset on and you're talking to other people who also miced up. Do you, A, wire up and simultaneously get someone to trip over you're cord and break it too leading to some transceiver somewhere else, or keep the transceiver entirely on your person.
Or lets say you're a police officer, performing a traffic stop. I'd love to hear how -BigMac- proposes we run ethernet cables to cars that can go 100 miles an hour so they can check to see if someone is a criminal, instead of using their Motorola to talk to dispatch, or inside the car computer to look it up on a 4G LTE public safety network and log it themselves.
Here's one I've lived personally, what if you live in an old apartment you're renting, and your office is away from the cable internet link to the house. You can run 100 feet of ethernet, or set up wifi. Mind you, the ethernet would have to run along the floor through the living room, cross a well traveled path, travel along the hallway that covers nearly the entire length of the apartment, go around a corner where theres another frequently travelled area, then through a doorway where the door closes tightly with the frame, and finally to the desk with my MBP. Please note, I admit the wifi signal was poor, but reality said to me that ethernet cables were impossible. With me being the third person to move into that three bedroom appt. was no alternate room for the desk location either. Either I take the wifi performance hit or I have NOTHING.
Edit to add, I wrote this up during the time -BigMac- posted, so didn't see the outlandish comment, but wrote it from the expectation that he would counter with that from most outlandish to least outlandish.
Also, what if you had $1000 bucks to get information 1 KM (or 1 mile). Do you do it with radios (think wifi routers with yagi antennas and preamps(or even simple $25 handhelds depending on the situation)) or with your choice of wired connection. Mind you, you have to provide the cabling in between if you choose that route. This is astonishingly real world.
-->I'll grant you if I am a desk with my choice of hookups, performance wise I too will choose wired or wireless. ---->All I'm saying is anytime you throw some sort of appreciable distance into it, wireless will frequently beat wired, whether out of wired being a straight up impossibility, or it being VASTLY more economical.
