Joss and others have asked for the simplicity of a button. Nobody has one yet.
All browsers are similar, too, in that they do not give you easy controls.
Money. Seriously. Even Apple bakes Google’s search engine into Safari as the default. Why? Is it because more customers would choose Google? Or, is it because Google gives Apple a few billion a year to make it happen?
Browser makers get their money from Google so they want their users to search, that’s why they don’t make it easy to kill history, search results, and to keep Google out of the equation.