Why do authors/writers tend to write about suffering and the angst of life?

In “the things they carried”, why is jimmy unsure when martha calls the pebble “a token of her truest feelings”

Which poems include the theme that memories of beautiful natural places benefit the people who recall them? "to spring" and "lines written in early spring" "to autumn" and "to a butterfly" "to summer" and "the human seasons" "i wandered lonely as a cloud" and "lines on a beautiful spring in a village"

What did the radio version of the war of the worlds include in the broadcast to create pathos and keep the audience's attention?