Re: Google life compromised on iPhone?
The user experience for several Google Apps is superior on Android than on iOS. This is expected.
Photos background uploading is pretty terrible on iOS. The same is true for practically every other cloud storage service, though. I think Google's Media apps (Play Music, Books, Movies & TV, etc.) are superior on Android. The YouTube app there is better, as well as Drive and it's sister apps (Docs, Sheets, Slides). Maps is better there, but should be more than good enough on iOS.
Google Now and Assistant are going to be far better on Google's own platform than on iOS. Chrome is obviously better on Android than on iOS.
Price of services shouldn't be an issue. Subscribe through Google and just buy a Play Gift Card every other month (or so) to keep enough in the account to cover the subscriptions This is the same as with iTunes when you aren't giving Apple your Credit Card info. You can get them at any Dollar Store, Wal-Mart, Best Buy, etc. This is how I typically pay for things.
Subscribing through iTunes is an issue when you want to change a subscription, etc. and it requires you to turn off the Subscription immediately. A lot of times, the company simply can't do it due to it being tied to iTunes (I've had this issue with an Office Subscription, before), but they can easily accomplish it if you were being billed through their own system.
I don't think the disparity between UX on the platforms should be a deterrent from getting an iPhone if you want one. It's something you should simply expect to deal with.