Sorry, I guess I should have been more specific, I don't believe it will be in any variation of the upcoming iPhone. And you're analogies make no sense, as I was speaking about the post, not Apple.So if its for a product you don't have any interest in, it's a wasted effort? Lots of people will buy a 7+ and enjoy this feature. If you're not one of them, that's your problem, not Apple's or the 7+ users.
By your logic, it's wasted effort for Apple to make a phone at all because it won't run OSX. Or it's wasted effort for a Ferrari to have a powerful engine because it won't be on a Ford Focus.
Here's a hint, there are more people on this planet that you, and more usage cases than yours.