Uh ... do I have to have one of these buttons on each of my shirts? Seems like it would be better to have the headphone attachment mechanism on the headphones,

Uh ... do I have to have one of these buttons on each of my shirts? Seems like it would be better to have the headphone attachment mechanism on the headphones, like a clip on the headphone wire, so I can clip it to my shirt. Oh wait, I already have that.