Man has a lot of problems. Something is particularly salient: his arrogance and complacency. It's completely irrelevant how much evidence one has for whatever it is that one desires so much. Religion doesn't work because no matter how many pray or sacrifice, it can't work because there is no reality behind it at all; a total nothingness no matter how much you deny that fact. So something must be, which is much more real: extraterrestrials.

Unfortunately, also here his arrogance stands again to the human being in the way. Which does not let him recognize what the 'planet earth' is in truth and why people live there today. That was not a cause in evolution, even if it appears so or even must appear. These beings from outside may find man interesting at times, but not so much that they waste resources to get him out of the disaster for which he himself is to blame.

It's quite simple: One is not interested in the human being as a whole, only in individuals, and they must stand out.