[midoridensha]

>We do not know if and I bet plenty of people do not believe such negative energy really exists.

Plenty of people believe that mental problems are all caused by disembodied souls unleashed by Xenu of the Galactic Confederation when he blew them up with A-bombs in Hawaii, back when Earth was called Teegeeack.

What "plenty of people" believe is not important.

[midoridensha]

Also, "plenty of people" used to believe the Earth was flat, or that the Sun orbited it.