Greater user engagement should be at least one of the goals you have for your site. Not only will more engagement help you with SEO, but more importantly, it will build a stronger relationship with your visitors.
If visitors are checking out more of your content, it’s a sign that they’re interested.
Of course you need interesting and relevant content. And many sites have that. But one thing they often lack is a successful strategy to help users find more content that will be of interest to them.