Google is an extremely helpful tool that gives you all the answers to questions both weird and wonderful. However, not everyone wants there to be digital evidence of what exactly they have been looking up on the web.
The search engine likes to save your browsing activity in order “to give you more personalized experiences, like app and content recommendations.”
Not everyone wants their search history saved though and some might have their own personal reasons for wanting to clear their browsing history. Whether that be because they don’t want people seeing their questionable searches or they want to protect their privacy - it’s a personal choice.