-what is bad ? and, what is good ? -The words sad o joy are may be more appropriate ?

If you define something bad or good, you created a division. And so, you close a door (expressing what you feel) (example :bad weather or good weather vs blue sky and grey sky)

"There are several reasons why people are drawn to bad news. " May be you should have mention word conscious and unconscious instead...?

And at last, all the news may be have to occur for the evolution of humankind.

It is just another though...