"And yes, I still miss my 1/8" jack on my iphone. Every single day. And stay off my lawn, you whippersnappers."
In my case so that I can use, with appropriate adapters in some cases, reasonably nice over-ear headphones (Beyerdynamic, Grado and Seinheiser). Do I really need several stages of modulation, propogation, reception and demodulation between me and my signal?