This is just another variation on the tedious 'What is the meaning of life?', which has been asked ad nauseum on countless Q&A sites.
The only meaning in life is what we choose to give it, there is no overriding singular purpose aside from each perpetuating their kind, and it is merely a wishful empty boast to proclaim human life is more significant to the vast universe than any other life.
Humanity ought to conceive a unified purpose for itself, it is we alone who could, but our flawed and adversarial nature has always been in the way. The various gods have rendered no aid in this.
As for death, believe whatever makes sense to you, but it won't change the fact, whatever it turns out to be.