I have to say, I am counting the days to the end of my iPhone 5 phone contract, when I can be rid of Apple hardware and software once and for all.
I have owned Apple products for years and have always found iTunes a relatively easy program to get on with, albeit with a few quirks...but with each and every update it becomes more difficult to use. Features that are so readily needed are just hidden into obscurity or made obsolete for no obvious reason, other than design for the sake of re-design. Losing the default sidebar is probably the most ridiculous thing I've ever seen in a program overhaul: why? It's akin to losing a piano keyboard on a music sequencer. I don't get it.
I consider myself very PC literate, but had to 'Google' how to find my iPhone on iTunes 12 to put single tracks directly on the device. Having to 'Google' how to use a program shows just how counter-intuitive it has become from a long-term user perspective and most likely new users are having a similar navigation issue - it's just so awkward to use out of the 'box'. 10 years ago I had a creative MP3 player where I could drag and drop tunes and playlists...it was simple and effective. How can things go so far in reverse? In the sidebar I could scroll through my songs and just pick them out and drag them across to my iPhone easily and simply...now it's an obscure option in a 'playlists' menu.
I'm not going to go into my hardware issues, that's another story with an ending that goes as follows...'farewell Apple'.