What could be the purpose of our life?

To be able to tell interesting stories to St Peter when you get there. If you can't impress him with how good you were at least you can make him laugh at all the stupid things you did.

Or something like this.

One belief is that we are all god dreaming. God on vacation and forgotten who he is. We are just here to experience and give god a break from knowing everything.

none. there could be no purpose. it is possibly up to us to FIND a purpose, and then make it meaningful.

everything just is.....meaning is so you don't go crazy or get depressed.