What was super frustrating was that the specs are almost the same after a three year gap. I still have 8GB or RAM and still have a 128GB SDD. The processor and has double the cores, but overall it's not the kind of improvement you'd expect from a three year difference.
Instead it's thinner and only has USB-C inputs. I would have never chosen to buy this machine on the merits alone.
I'm in the same boat with the iPhone by the way. I have an iPhone 6 and really see no reason to upgrade. It works well enough for me and I have no appetite to spend 500 or 1000 dollars on a phone that will do the same things for me.
And yes iTunes is a disgrace. I've switched to Spotify for podcasts and most music and it's far better.