"But my site doesn't have forms or collect information from users."
Doesn't matter. HTTPS protects more than just form data! HTTPS keeps the URLs, headers, and contents of all transferred pages confidential.
"There's nothing sensitive on my site anyway."
Your site is a liability! Just because your site is hosted safely in your account doesn't mean it won't travel through cables and boxes controlled by who knows how many corporate- and state-owned entities. Do you really want someone injecting scripts, images, or ad content onto your page so that it looks like you put them there? Or changing the words on your page? Or using your site to attack other sites? This stuff
... read the whole story at doesmysiteneedhttps.com.