God
So let's find out why a creator might be a rational answer. What are your presuppositions regarding a god? Were you brought up with a belief system, or did you arrive at this possibility yourself?
I was born that wayi found my way here

Potentially a great answer, but I would like to challenge how you got there. Were you raised in a religion and chose God by default? Or, did you research the various options and decide that God was the most likely? 

god by defaultgod by deduction