I use Windows, Android and iOS because none of them delivers everything I want.
I do the minimum on iTunes, especially since firmware updates and backups moved to the cloud. There also have been rumors of an iTunes overhaul in the works, so we'll see.
I like to keep my options open as a consumer. If better hardware comes along, no matter from what maker, I want to be able to easily switch and access content that I've already purchased. So Amazon ebooks and music appeal to me, for instance, because I can use them across iOS, Android and Windows with cross-platform apps like Kindle and Amazon Cloud Player.
iTunes is just as bad, and iPad's lack of a file system just as frustrating, to lots of us Mac users, too. It's the price we pay for not giving a second thought to malware.
It's a shame, though, that Apple doesn't enforce more standardization in the user interface. Too many apps have mystery meat navigation, making you guess at what they do, much less how to do it. The consistent UI was one of the Mac's major attractions, back when Apple still cared.
milliHelen: amount of beauty required to launch one ship.