You're an example of someone taking things to serious
but im just giving an opinion also
It's true that we know no purpose that's why people try to find one. For some reason, people get up every morning and go to work/school or whatever it is they do with no guarantee of success yet something drives them to continue foward. They maybe fools for existing but that's also their purpose. People make it their purpose in life to keep on existing until they feel they are no longer needed in this world or just have given up. Which ever comes first