Is there a purpose to life?

Once we make a decision to do something I notice the planning begins and then the "need to-s" start happening.

I decide to go on holiday. I need somewhere to go. I need to get there, I need accomodation etc etc.

Once we have a goal and are in a situation then there is plenty of purpose and plenty of things to do to achieve that goal.

For another example I decide to do todays Sudoku. Once decided then the "need to-s" start coming as logic reveals where the numbers go.

It always begins with a decision. I guess what I want in life is a starting point a fundamental "need to".

Choice seems to be the key as Sartre would have pointed out, and life is something that we create like artists.

But I always thought that if life is just an arbitrary act of creation then it becomes meaningless. Even art occurs in a culture and tradition which determines what will happen broadly and decisions are made within such a framework.

You could argue that life is a socio-biological process of history, culture and genes within which matrix we make our decisions about life.

But again its just arbitrary knowing that we are being drawn along on a quite meaningless river of time and natural processes.

At least at this point of investigation there seems to be no soild foundation on which to base lifes choices. Life has no obvious theoretical basis and day leads to day and problem leads to problem within a framework which I have no decisive knowledge.

Obvious things to enumerate are the basic needs and processes of biological life, and then social and then spiritual at some later date...