Why should I be using mobile data to stream music to a $1000 phone when I can get an MP3 player for $26 that can hold 7000 songs on a micro SD card and has 80 hour battery life? The ethical and ecological impact of cheaply made products isn't so great, but I think it's at least worth being somewhat aware of the tradeoffs we're making.

So true. And the headphone can have a jack too, if that's what you want.