Every time you create a blog post you're creating a new/unique page online (on the internet, across search engines). This means that you're increasing your chances of ranking in search results, having other websites link to you, and your post/blog being shared on social media. All of this results in new traffic to your site.
Not all bloggers are great writers, but it certainly helps! One of the great things about being a blogger is that it automatically turns you into a better writer -- since you are continuously writing content day in and day out. Whether you are a newbie or have been blogging for years, I have 3 writing tips for bloggers that your audience will appreciate immensely, which will ultimately help your blog grow!