In terms of making money, posting fiction on hubpages probably won't earn you much (if anything). The simple reality is that no one is searching for your writing, specifically. The articles that make money are ones that pop up when someone is looking for an answer to a question.
Having said that, I do think there are benefits to posting your material here. For example, if you seek out other writers, you can form a group for work shopping or feedback with a central location for your fiction to be viewed and commented on. You also have greater freedom to post in different genres or writing styles. HubPages won't refuse to publish anything because it's not your genre or style. For example, I post fictional how-to articles about supernatural creatures. It really opens up possibilities to write things you might not normally have written and allows you to connect with other like-minded writers.