I think large-scale conspiracies are essentially impossible. If the moon landing was faked, everyone would know about it by now. I don't buy everything I see, but I am fairly confident that time would reveal the truth. And if it doesn't, it's not really that important anyway.
There are plenty of people that think the holocaust never occured, that Bush planned 9/11 WTC bombing, that the CIA killed every dead rockstar.
Some people think the world is flat!