[mrtranscendence]

Stories place ideas into context, not only making them easier to remember (as mentioned by another comment) but also easier to understand. Analytic philosophers are used to dry, precise language, but even they often rely on scenarios and narratives -- this can help reveal what the reader thinks intuitively and bring that into sharper contrast. By remaining story-free you're giving pedagogy the short shrift.

What has empirically brought more folks into careers in science, dry textbooks foisted by teachers or Star Trek? I'd argue Star Trek and science fiction more generally. You can chalk that up to human failings if you like, but inspiration is a need that can't be avoided if you wish to convince.