Same here. I thought IOS was cool in 2007 when most people first got it, but then the constant forced-upgrades and forced-updates of the phone where it would randomly reboot the phone while sitting idle on your desk and where you would randomly lose functionality -- this was happening in 2007 -- made me really want to switch to something different. I always felt like Steve Jobs was in my pocket and I couldnt control the phone, it was controlling me.
It seems like the OS updates are part of the problem. In particular, updates are still delivered as a bundle of 'good stuff' whether its security patches, bug fixes, feature updates, or fundamental UI reimaginings. I know most 'normal' users don’t want to concern themselves with these details, but most 'normal' users just want to use their device to get something done, not have to relearn how to use it every six months. Even if that means it’s 'better'.
Classic car comparison: imagine every time you took your car in for a service, the mechanics not only fix any problems, fine-tune the workings, and give it a clean, but they also 'improve' the controls. Your automatic becomes a manual, you gain acceleration but lose top speed, and your indicators switch with your wipers. It would be an absolute nightmare, up with which no one would put!