What's the ultimate truth of life?

I was thinking about this. Why we are earning? We have been born and we don't know we are born. As a societal construct, from born to death u should have a very smooth life otherwise u re fucked up. Means good in studies even if u re not doing good then at that time people will say yhi to main time hai. If u re good in studies and if u re not able to get a good job(comparison is everywhere) then again society will put u down. After that relationship people nowadays are chasing good partner. Bhai lekin kabtk usse bhi bore ho jayega insaan. Agar vo acha nhi mila then again society will put u down. Ki husband acha nhi hai biwi nhi sambhal skta. Ya for girls ke liye ye to pehle se hi aise thi. Agar yhan tk sb thik rha aur bacha bc nikl gya to parenting kharab yhan fir jee nhi payega insan. Age will increase and humans will continue to do their work to sustain their family. But why? And then once people leave their job and then all alone. Will start a countdown for their death. If people are lucky then they will not face this if everything turns out to be positive this is what we are thinking. But why are we doing this? If someone is unlucky in this perspective then society structure are made in such a way that the person will vanish.