1. I only use high quality headphones that have a rubber membrane, as much because of the sound quality (insulating me from the outside world) and out of respect for my co-workers and fellow passengers (other headphones are super leaky). I haven't seen the major manufacturers making a blutooth version of their in-ear models.

2. Interoperability: I currently have one headphone I can forget in my pocket and it works on all my devices: desktop computer, home laptop, ipad, iphone. I don't want to have to carry multiple models and dongles.

3. I already have to deal with too many batteries, I don't want more batteries in my life, rather less.

4. The last time I tried blutooth audio (a few years ago) the quality was terrible and there was a significant delay (was a bose noise cancelling headset). Things may have improved but in any case I have never seen wireless technologies that aren't unstable in some ways

5. Blutooth headphones is not solving any problem for me. Why should I switch? Why should I have to deal with more hassle? What's the benefit to me? Feels like a user hostile move to sell more hardware, which annoys me and pushes me instinctively to resist it.