If SSL is worthless then why world's #1 E-commerce store like Amazon, Walmart use SSL Certificate? Why world's leading Social Media website like Facebook, Twitter use SSL Certificate?

SSL is most trusted sign to prove your website is legitimacy. If you buy your ssl from Leading Certificate authority like Symantec then it will give you more then $1,000,000 NetSure extended warranty.

In my personal opinion, SSL Certificate is worth for your website.