SSL is what makes modern-day e-commerce possible because it creates an encrypted link between the web server and your browser – making a secure payment system.
Think of it like this; suppose you post a confidential letter through a mailbox. the letter is then taken out of the postbox by a mail carrier and is sent off to its destination. While the letter is in transit, it falls through the cracks of the freight and is gone. However, with SSL the route between the mailbox and its destination is completely secure – making sure hackers can’t get access to your online data.
In the past, you only needed SSL if your business accepted credit cards or other sensitive details. Google Chrome now alerts visitors that your site is not secure if you accept any information at all, even an email address. So to make sure you have a quality site, you will want to look into SSL.