I can think of an exception: when I'm slogging through the enemy countryside, bringing the slow units up to the target city. The AI has gotten fairly good at spoiling attacks - sending a unit to kill or cripple one of mine, taking him out of the upcoming assault. By pre-emptively wounding a good enemy unit, I'm keeping it from injuring one of mine, AND weakening it for the ultimate city assault. Yes! How could I forget interdiction - one of the bomber's most important jobs? And I think allowing bombers to destroy RR and road improvements (which they could do in Civ3) would go a long way to spreading the bombers out, giving them too much to do, and effectively reducing that uber-stack problem? You know, that makes our human bombers more lethal than AI ones? ???? I'm an unrepentant Civ warmonger, but did I read that right? Are you referring to mass murder from the sky, racial cleansing, extermination, genocide?? Methinks you couldn't have really meant that... right?