I understand the impulse, but so many security issues happen to people because they're tricked into running things… I can't help but think that this would cause a dramatic rise in the number of security issues on iOS.
Remember what happened just over a week ago to the NHS and all sorts of other computers?
Security is becoming EXTREMELY important, although it was already pretty important.
Apples very strict (occasionally draconian) app model on iOS is one of the reasons it has so few problems with the software destroying the system or viruses or other such things. There's a reason Microsoft is eyeing it jealously for Windows. That kind of heavy sandboxing makes exploit much much more difficult.
