This is a common mantra among Americans.
So, do you think that there was no conspiracy causing the events of 9-11, for instance?
Do you believe that the hijackings of the 4 planes were random, coincidental and uncoordinated events?
If so, then you have to be a believer in the Easter Bunny and the Bogeyman, too, and live in a world of unexplainable fantasy.
I often ask people who mindlessly poo-poo "conspiracy theories" this question: If the notion of a conspiracy is so absurd, why are there laws against it?