Browser history makes my browsing incredibly more efficient and is the number one reason why I copy my Firefox profile on new computers.

It lets me find back pages I know I browsed in the past with a (few) keyword(s) in the address bar without firing a web search, which might not return the same results as last time. Like, what was the exact crêpe recipe I followed last time?

The alternative is bookmarks but then you need to think of bookmarking the page at the time you access it, but you don't always know you will want to go back to a page later.

It also makes it very efficient to reach pages I visit frequently. Unfortunately it also makes procrastination very efficient, with slacking off one character away ('n').