Or . . . what if when we die, we instantly go back to our life again as a baby, and each time we have that little bit of knowledge from our past trial to help us make a better life each time? Like playing cards, hoping for a good hand, playing over and over until we get a win, then when we win it's all over--we die and The End.
Or . . . what if dreams are real life, and our awake times are us dreaming? If you were an insomniac then you'd be drawing more and more away from your reality, slowly dying.
I could go on.