It's one thing to trust Apple on privacy issues. But you'd need to decide if you trust their security - on the timeliness and reliability of their updates. Nobody wants a p0wned webcam in their home.
Ask the New York City District Attorney about that. He now has more than 200 iPhones he can't get into.
Also, with respect to security, ask why it was only Apple that pushed back hard on law enforcement and Congress recently. Nobody from google or the other phone manufacturers went up against law enforcement or testified before Congress. Wonder why...
And how are the timeliness of those Android OS updates, anyway?