I use H2 tags in a lot of my blogs. When writing a blog, I always have a focus keyword(s) which I include in header-2 tags. I don't see it as being as important as it used to be though but it probably won't hurt anything to use them 🙂
Hi,
Of course, h1, h2... tags plays vital role in SEO.
h1 tag means title
h2,h3.. tags means sub title
If you don't put h1, h2..tags then Google will treat your title, sub title as a body content.
Make sure that your main keywords are present in h1 tag.
Yes, the H1 and other tags helps in SEO. It helps search engines crawlers to identify your webpage content easily which gives you benefit. So you should be always careful about H1, H2 and H3 tags for a better SEO of your website.