Not just the history, I personally delete everything every time I close the browser, if something is worth saving I bookmark it or I make a .txt in Documents for later review. Also I pretty much don't login anywhere anyway.
If you can't predict what isn't worth saving it means it wasn't worth saving.
I login and use it a little different for work but I separate sessions and leave them open longer until I'm done and still everything clears when I close, sometimes I remove the checkbox but I clear at the end of the day.