I've had mine for four months as of yesterday. It's my first iPhone and I wish I'd got one years ago - I love it to death and already I cannot imagine using any other brand of smartphone. It's fast, smooth and 'just works' - my former Galaxy S had no end of glitches and hangups, some hardware related, others down to the bugginess of Android.
I think Apple are slightly missing Steve Jobs' influence at the moment (for instance, I don't think he'd have released Apple Maps in the state it was at launch), but I can't wait to see what Jony Ive does with iOS, although it may be iOS 8 before we see the full fruits of his labours.