Why are we so different?

I keep wondering about how each one of are so different inspite of the fact that all of our lives run based on that tickling heart beat which is exactly same in everybody?

 

Well, at times, I come to a conclusion that all of us are born equally at birth with absolutely same behaviour, same features(different for females), same expression etc. But as time go by, we actually become embodiment of our observations, our learning, our experiences. Thats where we start differing in same topic, towards same food, towards same god!

 

I do not know if this is nature design to make world go like this.

 

I am so much puzzled.