I don't know. Maybe I just like changes, but I kinda like that that 3.5mm jack is going away, even though I sometimes use it. I've had bluetooth earphones for 5 years now and I love it, I use them 95% of the time, they last around 9 hours, which is great (I think).
The more I hear, the more I am excited about iPhone 7, it'll pack new technologies, new iOS 10 (I hope they have something huge prepared for us).
I don't understand. Why would you be excited that they are taking functionality away? It's great that some people use bluetooth headphones, but the headphone jack is used for a lot more than just headphones.