Mind is meaning-making machine. There is no inherent purpose of life or existence, I guess.
Meaning of life and purpose of life these questions occupy a lot of space in mind every once a while. One gets tensed, even tired with these questions swirling in the mind all the time.
But gradually, there is a transition:
There is some meaning&purpose of life to There should be some to There might be some to There is no meaning of life.
Gradually, it is realised that mind makes meaning. Mind comes up with purpose of one’s life.
Suppose, for an hour there are zero thoughts in your mind, absolutely nil, what is your meaning&purpose of your life then?