Was Android (even stock) insufficient for reading news sites and quick photos? Or is iOS much better for you at those tasks? If that's all you need, then I would consider both Android or iOS sufficient, but I don't quite get why you'd give up so many options and capabilities to switch, unless iOS is much better at reading news and taking photos.
Maybe an analogy to help with my question. If all I need to do is unscrew Phillips number 2 screws and the occasional flathead, and I already had a great power drill with a bunch of bits in the kit (and had mastered it), why then buy a different power drill that that takes a proprietary bit and can only do Phillips and flathead? At some point I might have a need to do torx or hex or square, etc. Wouldn't you be better off having the capability should you need it? Why is it better to not have the capability?