I have excellent Bluetooth headphones that last multiple days on a single charge. You would think that makes the headphone jack just not important anymore. But I live in a neighborhood with a very satured frequency band which is so bad sometimes that the thing I'm listening to cuts out every few seconds.
Every time this happens I am so happy that I can just plug in a cable and I'm making sure this option will be available to me in future devices. Wireless is not always great.