In 2014 Google announced that websites using an SSL certificate would get a slight bump in search results. Last December they announced that HTTPS pages will get served up before their comparable HTTP versions.
Now, it looks like Google will take their support of all things HTTPS one step further in Chrome and will mark all websites that don't serve up an SSL certificates as non-secure.
Web Design Ledger points out that it's not all good news, and I'm sure many small business owners and those running personal websites might agree with their statement that:
This change, though being promoted as something to safeguard the web, is being viewed as more of a monopolistic move by Google. By “forcing” webmasters to use HTTPS, Google may or may not make a safer internet, but it surely is making life difficult for the average user who just wishes to have a generic blog or website.
Just another reason to maintain a current SSL certificate for your website; you don't want your users to think your site is an any way not a safe place to be. We're secure, are you?