I personally find it nicer when the AI communicates quite clearly "Hi there, sorry to interrupt, but I have just launched a nuclear first strike on the enemy. This I thought would best for the current situation." instead of "WARNING! Nuclear first strike began".

Gives destruction that human touch.

Why are we counting sand grains at the beach. Yesterday we're talking about AI driven weapons of mass destruction and today we're arguing whether AIs should have a personality or not. F'A!