What is given in your question is fairly ambiguous and subject to wide open interpretation. Greater specificity could help in deriving insight and assistance to make your thoughts more focused in writing. In terms of what is there, I think that the setting for your dialogue could be essential. It might be good to consider or focus on a location where people from different experiences converge and are able to share their experiences. Something as banal as a bus stand or even waiting in line at the bank or the supermarket might give you the setting where you are able to talk about how specific and different people feel that the world is not a pleasant place to be. It could be quite topical in that the headlines of today's news setting helps to establish why the characters feel the world is not a good place to be. I think that being able to have each of your characters develop specific rationale and criteria as to why they feel that the world's setting is not a desirable one is also a part of this process. In being able to establish these elements, I believe that your writing sample can show depth and exploration of a topic that many people, to a large extent, experience.