User blog comment:CommanderOz/Alien invasion scenario/@comment-34650195-20180813131151/@comment-27160012-20180817010202

The humans would be inadequately prepared. They have their entire fleets in orbit, and can do small orbital maneuvers to evade ballistic missiles very easily. Anti-satellite missiles that do manage to keep on track towards the aliens will be countered with an alien LaWS, which I forgot to mention. On the other hand, it's easier to attack targets on the ground and at sea with nukes, chemical weapons, biological weapons, etc. and kill billions.