I don't want to. And I don't want to carry one around with me everywhere. I use several different types of wired headphones. Plus the convenience of being able to plug into basically any sound system is unmatched. Still plenty of cars that just use aux cords. Plenty of speaker systems that are easier to connect to with a headphone cord and sound better.
And my final point is there is no practical reason to remove it it is just as easy to waterproof and it does not take up that much space.