Or we could turn the proposition around and ask---"... if you were on your deathbed and were to be given the opportunity to live a randomly chosen (human) life again would you do so?" This time you would have the advantage of knowing what being alive was like, though not the actual life that you would have to live, ... would you have another go? Is life itself enough, or would it be too challenging? There's a great deal of variation in human existence, perhaps even too much to take such a risk.