HTTPS has become a web-standard & one of those practices that every webmaster should follow. HTTPS is great for the security of data as it encrypts the data transferred between users & a website. Especially it protects them from common hacking practices such as data sniffing & man-in-the-middle-attack.
I won’t get much into the technical side of it, but let me quickly give you an overview of how HTTPS is useful for security of users like you & me.