The web is going https way, and most of the websites have been converted from http to https. Though, it is easy to transform from http to https, webmasters are concerned about ranking of the new https site. Check out the discussion below for in-depth analysis and what a webmaster needs to do for seamless transfer:
https://webmasters.stackexchange.com/questions/68435/moving-from-http-to-https-in-google-search-console