This is just a silly sentiment. The iPhone maps app may not be perfect but having no clue why it was created makes it sound like you are dumb or just being difficult.
A mapping service with directions on a device that is supposed to be with you all the time is supposed to be mostly handy for driving purposes (at least from my perspective). That's a fundamental requirement. Lack of voice turn-by-turn makes it incomplete, not "may not be perfect".
I questioned why it was neutered the way it is now - not why it was created. I buy Apple products for wholesome user experience and the Google maps ain't one of them (neither is the mail app and so on). If you think this is a silly sentiment, then you must be pretty dumb about user experience issues in mobile situations.
Driving is not the only mode of transport. And SatNav is not the only type of useful map.
Paper maps are useful - an equivalent to a paper map that holds data for the entire world, can put a pin in my exact global location, and can tell me where the nearest Starbucks is? Yeah, I can't see any use for that at all.