Think about what kind of site you have and what why your visitors come to your site. What ste they looking for? What else are they interested in? So the first question is, seo aside, does blogging make sense for your site? Sometimes all people are looking to do is buy something, get some piece of information, use a tool, or watch a video. Blogging doesnt make sense for all sites. Also, blogging, even if not getting seo traffic, can have huge branding benefits and help trust and conversions in general. That being said, if blogging is a good fit, it can help seo by attracting quality links, helping relevancy, and getting more traffic. I think you many people think seo is some type of checklist instead of understanding the proper seo philosophy and how it fits into the internet ecosystem. Goodluck!