I would personally like to see this not happening. I didn't pay for such an expensive device so that I can have an open system. I still use android devices but that's when I want to experiment with things and don't care about the device. My personal information is in these iDevices and I'd prefer them to be locked down secure. I don't trust any android device period. hence not having personal information stored on my android devices!
So are u going to pay a fortune to live in a jail instead of a home? Because jail its more secure than a home...
Anyway, no one will aim a handgun at your head forcing you to sideload apps. You will still can download apps from app store ignoring sideloading feature