{Till some time back|Till few years back" very few bothered if your website was using SSL or not. Infact the term was not known to many and one in thousand knew about the trusted seals offered by security companies. If your website was on HTTPS you were considered to be check here someone who was overly cautious about client security.
Things changed as Google released an update to Chrome in Feb 2018
Google Chrome and subsequently all the other browsers started marking websites which were not on HTTPS as insecure.
Need to know why you need an SSL?