Yeah the headphone jack being removed pissed me off too. However the lighting to 3.5mm adaptor isn't as bad as I thought it would be. Sure it was an extra £9 I wish I didn't have to spend, but was also a figure that I didn't lose any sleep over when ordering it.
The adaptor just lives on my headphones as I use a differnt pair at my desk. The only reservation about it now is "Will it fray like all other apple cables do with time?"
EDIT: Also had a 6s. Had 2 battery changes and the phone was due for a 3rd before recently just swapping the phone. First was done by Apple for free (excluding the cost of travelling to the Apple store and turning it into a shopping day :-P), the other I did myself at home with a 3rd party battery.