Was it only because they wanted to learn how to earn money?
In my first draft, I asked a lot of questions here, such as what are the benefits of learning investing, and how does it influence people's lives. But actually these questions did not seem to be related to a subculture. I thought it was not a good idea to set the framework of the essay in the beginning, and maybe I should put a simple question here, and let the question guide my thoughts throughout the essay. So I asked a question that I was curious about, and it was also the reason I wanted to explore more about this subculture instead of the activity of investing. I thought in this way, I could have a better organization of the essay, and I could dig deeper into the follow-up questions that appeared in the later paragraphs. I think we need to think out of the box and avoid being influenced by our mindsets so that we can develop some new ideas and be more creative.