I think you skipped a track, there. My comment was referring to your apparent low opinion of humanity's capabilities, not its deeds.
The problem with "open minds" is that some people's minds are so open that all their brains have fallen out. There's a big difference between having an open mind and being so gullible that you are taken in by hoaxers. An open mind is one that considers different viewpoints, but it's not necessary to believe in them all.