I don't use wired headphones anymore, wireless is just better for running.
That said -- I oppose eliminating this jack. My hearing disabled father relies on it for his custom monaural earpiece.
Why eliminate such a functional port in the first place? As someone who took the MacBook plunge USB-C is a pain in the ass.
Wireless headphones - disconnect after 60 seconds of no sound, which means that at the office if I stop listening to music for a little bit(or even pause because someone is talking to me), they will switch off, so I have to turn them back on and wait 20-30 seconds for them to reconnect and sound to start playing through them again.
Sony bluetooth soundbar - worse than useless. There is delay in the audio, meaning that I can't use it for videos or games, because sound plays 0.5s too late. It's ok for music I guess.
My own car - the quality through bluetooth is noticeably worse than when using a 3.5mm jack, and also stops working randomly, requiring me to switch bluetooth on and off on my phone or the car or both.
The connectors are sturdy with no delicate parts like micro USB, most USB-C are USB 3 (or 3.1) with faster bandwidth and it's reversible.