[IteseFrusty]

I think the reason they are kept secret is because knowledge is power. As long as The Powers That Be(or rather the powers that were ) know more than the masses the easier it is to control them. Anyone watch Ancient Aliens? The people of earth have known about ET's for who knows how long, but when certain people started to want to control everyone else it was easy to "make them forget". Just lie to them like the news does. If enough people lie, especially people of "high status" everyone will start to believe those lies and then kill the people who knew the truth or make them look like fools. If you have more knowledge than someone who doesn't it's easy to get them to believe lies. Why do you think that are education system sucks so bad? They want us to be ignorant. They want people to stay uninformed and unknowledgeable.