I agree, the OS shouldn't be adding to this problem, but there are plenty of ways for an application to close unexpectedly. OS crash, application crash, power o

I agree, the OS shouldn't be adding to this problem, but there are plenty of ways for an application to close unexpectedly. OS crash, application crash, power outage, the computer locking up etc. Any application that keeps a user's partially completed work open for long periods of time should be durable to all of these situations. An OS restarting itself should never be more than a hiccup.