I believe that there are different modes of awareness. When I am inclined towards mystical impulses, I subscribe to something along the lines that: form ends on death, but time is just a perspective from one vantage point because the past, present and future are really one; all things are really a part of each other, connected and strands in the great tapestry of life; and maybe we have one foot in this life and one in other dimensions of reality. Maybe there are incalculable vantage points.
There is a part of me that is uncomfortable with uncertainty, but even my purely rationalistic inclination finds a materialist concept of reality difficult to accept, given the absurdity of a microorganism thinking the explanations of how and why reside in the realms of the observable petri dish.
I believe that to thrive at being a good human being is the purpose – and in doing so is helping the macrocosm of the universe to unfold as it should.