The dongle is completely unacceptable to me. First of all, there is a 100% chance that I will at some point forget it at home or lose it altogether, and then be

The dongle is completely unacceptable to me. First of all, there is a 100% chance that I will at some point forget it at home or lose it altogether, and then be unable to use my headphones altogether. That's a dealbreaker. Then there's the sheer inconvenience of carrying it around. I only have three things in my pockets: wallet, phone, keys. It takes less than a second to ensure that I have all three of those things on me. If I now have to dig past my wallet to the bottom of my pocket to make sure a little dongle is in there, that is dramatically worse.