Up until the mid 1800's, a majority of Scottish people believed in fairies (often blaming them when farming equipment would go missing etc)

Seems silly to most people now right?  Back then, you'd be in the minority.

A more modern example is "Korean Fan Death" (google it)

For non believers (myself included) - religion seems silly.   Just because you have 1000 or 100,000,000 believing in these stories does not make them any more plausible.

My only issue is when religion begins to dictate policy in government or in schools. Other than that, believe whatever story you want.