A lot of RSS feeds are very plain and boring, which sometimes results to unsubscriptions or plain out ignoring your feed. Web designers should spend some time to make these more readable and more useful to bring in more traffic.
A few reasons why we should include images in RSS feeds is that it draws in users and also gives a visual representation of content. Think of it as a blog landing page. Another reason is that a few sites use aggregators that pull your RSS feeds so that will lead to more traffic.
I had this problem for the longest time of theming and adding images to a RSS feed View. I always got the default feed of just the title and some teaser text. It was too plain, no dates, and no images even when I added fields to the view. Googling for sample code and solutions was not much of any help, so here my purposed solution for all you readers!