I believe that Equiano could not return back to Africa because he believed he couldn't make a difference there, another reason might be the fact that his sister was taken as a slave also and he felt that the traders had now made this personal and he had to at least try to make a change. When he wrote the story about the horrifying voyage with all the other slaves and the "loathsome smells" I think it had turned out just like he wanted it to because I think that after people read his story it opened some of there eyes to the real idea of slavery.