You are not alone, Gabriel. Visual association beats textual and this makes sense. One thing though, the images would increase the bandwidth to the site, and maybe even hamper performance.
On the user side, you could presumably turn them off. As for server performance, Y Combinator should be able it.
Adding a visually intrusive feature and enabling it by default is not the best thing to do, especially when the understated appearance is the feature of the website.