The primary objective of having a website is to guide your users to some type of action: to read more, to share content with their followers, or to make a purchase. It is paramount to give visitors an opportunity to register, subscribe, buy, follow or download when they visit your website. A website that does not incorporate a call-to-action will not be able to serve its purpose. Visitors might read the content and navigate through the pages but leave without doing anything. The call-to-action button or link should be highly visible on every page and that your customers understand what they are meant to do. This is not about trying to push your customers to buy before they’re ready – instead, making sure that they don’t get lost or feel unmotivated by your site, causing them to bounce.

source: https://line25.com/ui-ux-design/things-websites-better-not-have