I tell my GF just about every other day that I’m still very disappointed that I didn’t get my zombie apocalypses.well, you would think with all the alien, zombie, asteroid, robot, end of the world movies and stories, ppl would learn something, but when hit with a real life situation all ppl can do is fight over toilet paper....so I think that may well answer this question.
Makes me think of a virus.Something so small we couldn't detect or work out in time to save us.
Could be,we can't even cope with earth born viruses.Could be a reason for the abductions.I don't think we should worry about something that we have no chance against or control over.Makes me think of a virus.
That is why the answer to this question for me is 'no', we are not prepared for an alien invasion.we can't even cope with earth born viruses