HTTPS prevents unauthorised people (third parties, snoopers etc) to view your communication with a web server. You should always prefer https wherever available. Even google search supports https.

As for the problem with the alerts, let it stay disabled. Instead whenever you are on a secure (https) page, your browsers, have certain colour codes to indicate that. For example firefox shows blue colour in the url bar, for secure pages. So rely on that instead of the alert.
posted by [Old Forum guest] • 6 years and 10 months ago Link