Banning sites with a click!

If you REALLY want to do something great, allow us to click on a tab, and select to never allow the address to open again! Hosts does not stop it. Malware software does not stop it. YOU do not stop it. Give ME the option to clean up my browser! How simple can it be to do this? But I have made this request to other browsers and no one want to do it. Why? I am betting you will not do it either! Why?