Because launch sites are expedite, mobile, and unmanned. It simply doesn't make sense targeting them - after the rocket is off, there isn't anything or anyone w

Because launch sites are expedite, mobile, and unmanned. It simply doesn't make sense targeting them - after the rocket is off, there isn't anything or anyone worth targeting there, and before the launch, it's brought there only a few minutes prior, way under the targeting cycle of anything but direct fire.