HTTPS is quickly becoming the new standard. With an HTTPS connection, connections will be securely encrypted. Encrypting a website with an SSL certificate is no longer only needed by sites that transmit credit card info or sensitive data.
These days, having an HTTPS-enabled website is a ranking factor for search engines. Furthermore, web browsers (eg. Google Chrome) will soon mark all non-HTTPS sites as "Not Secure." As a result, failing to implement an SSL certificate can drastically decrease your site's traffic and visitor trust.