I've had a good experience switching to the iPhone. Mostly positive and I don't see myself switching back.

But Siri is bad. Really bad. It doesn't understand me, it does things I don't want it to do, and it's very inflexible.

This isn't to say that Google's assistant is much better. In fact, I believe Google made it worse when they introduced the AI elements because it started making the assistant respond differently when told the same thing. But it was still much smarter and could translate much better.

Again, I don't see myself going back to Android, but Siri is one of the primary things I dislike about the switch.