I keep hearing this. The "The Men in Black" story in my opinion. What better way to make circumstantial evidence sound more believable if someone, unnamed and unknown comes pays you a visit and tell you to shut up. Of course you don't and nothing happens so I suspect this is just part of the story line.
I am not arguing with you but why would they not want us to know? Fear? They, they being those who are really in control apparently, like to use fear as a means of control. What do you think is their motive?
Believe me I am not arguing but I have come down to where I want REAL pictures not blurry BS pictures. I want a track in the ground. I want something tangible.
The people who have the most to lose are religious leaders. This isn't an anti-religion rant, it's just a point. Finding life - especially some kind of sentient life - on another planet would at least shake the faith of many people. They would need to re-calibrate their entire, deeply-held worldview, and that may or may not work out well.
The mostly likely scientific scenario, I'd think, is that we're ultimately going to find of microbic life flourishing in several places within our own solar system. Religion will have to explain that and the very high probability of life elsewhere. I'd think faith can be a shaky thing, and that adds a pretty hefty measure of risk to the faith equation.
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