The point is, every other GSM carrier in the world allows it.  AT&T specifically took it out of iOS 5.1 for the iPhone 4S only.  Rogers the largest Canadian carrier allows it on all their 3G and 4G LTE devices.  The point is it should be there, and 95% wouldn't even touch it, yes, but it would still be an option for the 5% who relies on it.  

At least we have the option to "take things into our own hands" with Android.