For the same reason they believe that UFOs are extraterrestrials: they believe dumb things.
That must be why many around here believe you.
They believe dumb things.
Since the government admits there are crafts that can move counter to the laws of physics and gravity, if the US, Russia or China have these crafts and have had them for decades one question comes forth. Why have they not been used to destroy enemies?
There is only two possibilities. There is a power on Earth that is hiding in the core of a hollow Earth, or they come from outside the atmosphere. If we had them, would we not be zipping back and forth to the moon and Mars?
Logic is your friend.