I'm a huge fan of Sagan but the fact that we're made of starstuff has nothing to do with when life itself began.
What I am failing to state is that I was thinking you could draw the conclusion that we were all born as soon as the big bang occurred because the resources that made us (starstuff) were released and slowly started developing our world, thus the birth of life may have occurred then.
I don't believe in the big bang, I'm just trying to draw some sort of conclusion from this and at least try to further myself a bit in the deep thought process of Philosophy, so I will sound uneducated in certain areas of specific fact and how that applies to higher level thought.
Look at it this way the way I do. When you die your body is deconstructed until it takes a new form. Before I was born there were atoms waiting to be me.
Thats what I was trying to conclude basically, so yeah.