iOS is the only reason I purchased the iPhone in the first place; it plays nice with OS X. That said, even iOS is beginning to roll downhill. The new Apple Music app is simply atrocious, and it's impossible to navigate if you're listening to music while driving. Apple maps is emabrassingly bad, and Apple hasn't introduced any real 'must have' features in recent memory. The finger print sensor fails to recognize my fingerprint 75% of the time. It's honestly the most frustrating experience I've ever had with a phone.
It's simply not worth the money -- at least not anymore.
I have eye sight, but am considered officially blind. I use the phone as my travel buddy that I now don't have to pay a ticket for. I switch between Google Maps and Apple Maps a lot, as both as equally disappointing. But oh so helpful.
Siri is just .. ignorant. The most logical human responses - especially the follow-up questions seem impossible. (iOS9 fixes a lot of this, and the TV OS from Apple seems promising, hopefully that 'content aware' searching leaks over to iOS.
The music app has never been nice, except when you use siri. To be honest, I listen more to podcasts with Downcast than music, if I use music, it's through third-party apps, not Apple's apps (which 9 out of 10 are in a folder called "Archive").
The finger print works 99/100 times for me, the one time it doesn't work is if I just done dishes or had a shower.
Different experiences, different use cases. But I do not believe that if I switch to Android platform (I wouldn't even consider something else to be honest), that I would get an any better experience. The Google apps I'd get there, I already use on iOS, like Gmail, GMaps, etc.
And final thought, sorry if it's a bit off topic. The people around me that told me I was just a fan boi and they stick to Android, they're all Apple phone users now. For me it would feel like a downgrade. Still does. But boy does their OS get better and better, and I am glad it is.