Making your main index posts page infinitely scrolling is a great idea because visitors don’t have to click previous or next to see your posts pages. Visitor retention is the key to earning more money through Ads or affiliate sales, and you can ensure your visitors stay longer or find more of your content if your main page posts endlessly scroll vertically. https://wordpress.org/plugins/infinite-scroll/
To make your main site infinitely scroll, all you have to do is install a great plugin called “Infinitely Scroll”. This plugin was created by BEAVER6813 and a few other people. It is a must have plugin if your theme isn’t already endlessly scrolling. Most popular websites online these days are infinitely scrolling and I think Pinterest was the first to spark this new infinite loading idea.